56455665 has 16 divisors (see below), whose sum is σ = 103233408. Its totient is φ = 25808256.

The previous prime is 56455627. The next prime is 56455697. The reversal of 56455665 is 56655465.

It is not a de Polignac number, because 56455665 - 2⁷ = 56455537 is a prime.

It is a super-2 number, since 2×56455665² = 6374484221184450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268732 + ... + 268941.

It is an arithmetic number, because the mean of its divisors is an integer number (6452088).

Almost surely, 2^56455665 is an apocalyptic number.

It is an amenable number.

56455665 is a deficient number, since it is larger than the sum of its proper divisors (46777743).

56455665 is a wasteful number, since it uses less digits than its factorization.

56455665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537688.

The product of its digits is 540000, while the sum is 42.

The square root of 56455665 is about 7513.6984900913. The cubic root of 56455665 is about 383.6211201644.

The spelling of 56455665 in words is "fifty-six million, four hundred fifty-five thousand, six hundred sixty-five".