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145346641 = 1113213331
BaseRepresentation
bin10001010100111…
…01000001010001
3101010111101002221
420222131001101
5244202043031
622231141041
73413266066
oct1052350121
9333441087
10145346641
11750540a0
1240814781
132415cb3b
1415436c6d
15cb60a11
hex8a9d051

145346641 has 4 divisors (see below), whose sum is σ = 158559984. Its totient is φ = 132133300.

The previous prime is 145346639. The next prime is 145346653. The reversal of 145346641 is 146643541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 146643541 = 1113331231.

It is a cyclic number.

It is not a de Polignac number, because 145346641 - 21 = 145346639 is a prime.

It is a super-2 number, since 2×1453466412 = 42251292099965762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145346597 and 145346606.

It is not an unprimeable number, because it can be changed into a prime (145346671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6606655 + ... + 6606676.

It is an arithmetic number, because the mean of its divisors is an integer number (39639996).

Almost surely, 2145346641 is an apocalyptic number.

145346641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145346641 is a deficient number, since it is larger than the sum of its proper divisors (13213343).

145346641 is a wasteful number, since it uses less digits than its factorization.

145346641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13213342.

The product of its digits is 34560, while the sum is 34.

The square root of 145346641 is about 12055.9794707854. The cubic root of 145346641 is about 525.7770998195. Note that the first 3 decimals are identical.

The spelling of 145346641 in words is "one hundred forty-five million, three hundred forty-six thousand, six hundred forty-one".

Divisors: 1 11 13213331 145346641