56345643 has 12 divisors (see below), whose sum is σ = 81456648. Its totient is φ = 37532160.

The previous prime is 56345617. The next prime is 56345647. The reversal of 56345643 is 34654365.

56345643 is a `hidden beast` number, since 5 + 6 + 3 + 4 + 5 + 643 = 666.

It is not a de Polignac number, because 56345643 - 2²⁴ = 39568427 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 56345598 and 56345607.

It is not an unprimeable number, because it can be changed into a prime (56345647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14571 + ... + 18027.

It is an arithmetic number, because the mean of its divisors is an integer number (6788054).

Almost surely, 2^56345643 is an apocalyptic number.

56345643 is a deficient number, since it is larger than the sum of its proper divisors (25111005).

56345643 is a wasteful number, since it uses less digits than its factorization.

56345643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5274 (or 5271 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 56345643 is about 7506.3734919067. The cubic root of 56345643 is about 383.3717551070.

The spelling of 56345643 in words is "fifty-six million, three hundred forty-five thousand, six hundred forty-three".