56455615 has 4 divisors (see below), whose sum is σ = 67746744. Its totient is φ = 45164488.

The previous prime is 56455613. The next prime is 56455621. The reversal of 56455615 is 51655465.

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 56455615 - 2¹ = 56455613 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 (56455613) 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, 5645557 + ... + 5645566.

It is an arithmetic number, because the mean of its divisors is an integer number (16936686).

Almost surely, 2^56455615 is an apocalyptic number.

56455615 is a deficient number, since it is larger than the sum of its proper divisors (11291129).

56455615 is a wasteful number, since it uses less digits than its factorization.

56455615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11291128.

The product of its digits is 90000, while the sum is 37.

The square root of 56455615 is about 7513.6951628343. The cubic root of 56455615 is about 383.6210069129.

The spelling of 56455615 in words is "fifty-six million, four hundred fifty-five thousand, six hundred fifteen".