56418561 has 24 divisors (see below), whose sum is σ = 83732480. Its totient is φ = 36593856.

The previous prime is 56418541. The next prime is 56418611. The reversal of 56418561 is 16581465.

56418561 is a `hidden beast` number, since 5 + 641 + 8 + 5 + 6 + 1 = 666.

It is not a de Polignac number, because 56418561 - 2⁷ = 56418433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56418511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51360 + ... + 52446.

Almost surely, 2^56418561 is an apocalyptic number.

It is an amenable number.

56418561 is a deficient number, since it is larger than the sum of its proper divisors (27313919).

56418561 is a wasteful number, since it uses less digits than its factorization.

56418561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1242 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 56418561 is about 7511.2289939796. The cubic root of 56418561 is about 383.5370601179.

The spelling of 56418561 in words is "fifty-six million, four hundred eighteen thousand, five hundred sixty-one".