56456645 has 16 divisors (see below), whose sum is σ = 77548800. Its totient is φ = 38651904.

The previous prime is 56456641. The next prime is 56456693. The reversal of 56456645 is 54665465.

It is a cyclic number.

It is not a de Polignac number, because 56456645 - 2² = 56456641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56456641) 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, 39656 + ... + 41054.

It is an arithmetic number, because the mean of its divisors is an integer number (4846800).

Almost surely, 2^56456645 is an apocalyptic number.

It is an amenable number.

56456645 is a deficient number, since it is larger than the sum of its proper divisors (21092155).

56456645 is a wasteful number, since it uses less digits than its factorization.

56456645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564.

The product of its digits is 432000, while the sum is 41.

The square root of 56456645 is about 7513.7637040301. The cubic root of 56456645 is about 383.6233398797.

The spelling of 56456645 in words is "fifty-six million, four hundred fifty-six thousand, six hundred forty-five".