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1056445009 = 325032
BaseRepresentation
bin111110111110000…
…001001001010001
32201121212222002221
4332332001021101
54130422220014
6252455141041
735115430414
oct7676011121
92647788087
101056445009
114a2376854
12255974781
1313ab40cb9
14a0441b7b
1562b30b24
hex3ef81251

1056445009 has 3 divisors (see below), whose sum is σ = 1056477513. Its totient is φ = 1056412506.

The previous prime is 1056445003. The next prime is 1056445021. The reversal of 1056445009 is 9005446501.

The square root of 1056445009 is 32503.

It is a perfect power (a square), and thus also a powerful number.

1056445009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9005446501 = 22214054681.

It is a de Polignac number, because none of the positive numbers 2k-1056445009 is a prime.

It is a super-2 number, since 2×10564450092 = 2232152114082020162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056445003) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 16252 + ... + 48754.

It is an arithmetic number, because the mean of its divisors is an integer number (352159171).

Almost surely, 21056445009 is an apocalyptic number.

1056445009 is the 32503-rd square number.

1056445009 is the 16252-nd centered octagonal number.

It is an amenable number.

1056445009 is a deficient number, since it is larger than the sum of its proper divisors (32504).

1056445009 is an frugal number, since it uses more digits than its factorization.

1056445009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65006 (or 32503 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The cubic root of 1056445009 is about 1018.4716984848.

The spelling of 1056445009 in words is "one billion, fifty-six million, four hundred forty-five thousand, nine".

Divisors: 1 32503 1056445009