56815895 has 4 divisors (see below), whose sum is σ = 68179080. Its totient is φ = 45452712.

The previous prime is 56815883. The next prime is 56815897. The reversal of 56815895 is 59851865.

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 56815895 - 2⁸ = 56815639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56815897) 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, 5681585 + ... + 5681594.

It is an arithmetic number, because the mean of its divisors is an integer number (17044770).

Almost surely, 2^56815895 is an apocalyptic number.

56815895 is a deficient number, since it is larger than the sum of its proper divisors (11363185).

56815895 is a wasteful number, since it uses less digits than its factorization.

56815895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11363184.

The product of its digits is 432000, while the sum is 47.

The square root of 56815895 is about 7537.6319225603. The cubic root of 56815895 is about 384.4353221916.

The spelling of 56815895 in words is "fifty-six million, eight hundred fifteen thousand, eight hundred ninety-five".