56515927 has 4 divisors (see below), whose sum is σ = 60863320. Its totient is φ = 52168536.

The previous prime is 56515897. The next prime is 56515961. The reversal of 56515927 is 72951565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56515927 - 2¹⁵ = 56483159 is a prime.

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 56515927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56515027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2173677 + ... + 2173702.

It is an arithmetic number, because the mean of its divisors is an integer number (15215830).

Almost surely, 2^56515927 is an apocalyptic number.

56515927 is a deficient number, since it is larger than the sum of its proper divisors (4347393).

56515927 is a wasteful number, since it uses less digits than its factorization.

56515927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4347392.

The product of its digits is 94500, while the sum is 40.

The square root of 56515927 is about 7517.7075628146. The cubic root of 56515927 is about 383.7575667923.

The spelling of 56515927 in words is "fifty-six million, five hundred fifteen thousand, nine hundred twenty-seven".