56140815 has 16 divisors (see below), whose sum is σ = 93731328. Its totient is φ = 28639776.

The previous prime is 56140813. The next prime is 56140829. The reversal of 56140815 is 51804165.

It is not a de Polignac number, because 56140815 - 2¹ = 56140813 is a prime.

It is a super-2 number, since 2×56140815² = 6303582217728450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56140813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81019 + ... + 81708.

It is an arithmetic number, because the mean of its divisors is an integer number (5858208).

Almost surely, 2^56140815 is an apocalyptic number.

56140815 is a deficient number, since it is larger than the sum of its proper divisors (37590513).

56140815 is a wasteful number, since it uses less digits than its factorization.

56140815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162758.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 56140815 is about 7492.7174643116. The cubic root of 56140815 is about 382.9066460046.

The spelling of 56140815 in words is "fifty-six million, one hundred forty thousand, eight hundred fifteen".