56051015 has 4 divisors (see below), whose sum is σ = 67261224. Its totient is φ = 44840808.

The previous prime is 56051011. The next prime is 56051027. The reversal of 56051015 is 51015065.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51015065 = 5 ⋅10203013.

It is a cyclic number.

It is not a de Polignac number, because 56051015 - 2² = 56051011 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 (56051011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5605097 + ... + 5605106.

It is an arithmetic number, because the mean of its divisors is an integer number (16815306).

Almost surely, 2^56051015 is an apocalyptic number.

56051015 is a deficient number, since it is larger than the sum of its proper divisors (11210209).

56051015 is a wasteful number, since it uses less digits than its factorization.

56051015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11210208.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 56051015 is about 7486.7225806757. The cubic root of 56051015 is about 382.7023777040.

The spelling of 56051015 in words is "fifty-six million, fifty-one thousand, fifteen".