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56909973 = 331360607
BaseRepresentation
bin1101100100011…
…0000010010101
310222002022210210
43121012002111
5104032104343
65351440033
71260504201
oct331060225
9128068723
1056909973
112a14033a
1217086019
13ba37653
1477b5b01
154ee2333
hex3646095

56909973 has 8 divisors (see below), whose sum is σ = 76123648. Its totient is φ = 37818144.

The previous prime is 56909971. The next prime is 56910013. The reversal of 56909973 is 37990965.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56909973 - 21 = 56909971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56909971) 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 7 ways as a sum of consecutive naturals, for example, 29365 + ... + 31242.

It is an arithmetic number, because the mean of its divisors is an integer number (9515456).

Almost surely, 256909973 is an apocalyptic number.

It is an amenable number.

56909973 is a deficient number, since it is larger than the sum of its proper divisors (19213675).

56909973 is a wasteful number, since it uses less digits than its factorization.

56909973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60923.

The product of its (nonzero) digits is 459270, while the sum is 48.

The square root of 56909973 is about 7543.8698954847. The cubic root of 56909973 is about 384.6473929064.

The spelling of 56909973 in words is "fifty-six million, nine hundred nine thousand, nine hundred seventy-three".

Divisors: 1 3 313 939 60607 181821 18969991 56909973