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56927969 = 78132567
BaseRepresentation
bin1101100100101…
…0011011100001
310222010020111022
43121022123201
5104033143334
65352055225
71260610520
oct331123341
9128106438
1056927969
112a15290a
1217094515
13ba428b7
1477bc4b7
154ee782e
hex364a6e1

56927969 has 4 divisors (see below), whose sum is σ = 65060544. Its totient is φ = 48795396.

The previous prime is 56927929. The next prime is 56927987. The reversal of 56927969 is 96972965.

56927969 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 Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96972965 = 519394593.

It is a cyclic number.

It is not a de Polignac number, because 56927969 - 220 = 55879393 is a prime.

It is a super-2 number, since 2×569279692 = 6481587308929922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56927969.

It is not an unprimeable number, because it can be changed into a prime (56927909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4066277 + ... + 4066290.

It is an arithmetic number, because the mean of its divisors is an integer number (16265136).

Almost surely, 256927969 is an apocalyptic number.

It is an amenable number.

56927969 is a deficient number, since it is larger than the sum of its proper divisors (8132575).

56927969 is an equidigital number, since it uses as much as digits as its factorization.

56927969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8132574.

The product of its digits is 1837080, while the sum is 53.

The square root of 56927969 is about 7545.0625577261. The cubic root of 56927969 is about 384.6879328716.

The spelling of 56927969 in words is "fifty-six million, nine hundred twenty-seven thousand, nine hundred sixty-nine".

Divisors: 1 7 8132567 56927969