56444661 has 32 divisors (see below), whose sum is σ = 102923520. Its totient is φ = 29771712.

The previous prime is 56444639. The next prime is 56444671. The reversal of 56444661 is 16644465.

56444661 is a `hidden beast` number, since 5 + 644 + 4 + 6 + 6 + 1 = 666.

It is not a de Polignac number, because 56444661 - 2¹⁸ = 56182517 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56444621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9030 + ... + 13943.

It is an arithmetic number, because the mean of its divisors is an integer number (3216360).

Almost surely, 2^56444661 is an apocalyptic number.

It is an amenable number.

56444661 is a deficient number, since it is larger than the sum of its proper divisors (46478859).

56444661 is a wasteful number, since it uses less digits than its factorization.

56444661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23002 (or 22996 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 56444661 is about 7512.9661918579. The cubic root of 56444661 is about 383.5961941680.

The spelling of 56444661 in words is "fifty-six million, four hundred forty-four thousand, six hundred sixty-one".