56543436 has 36 divisors (see below), whose sum is σ = 144353664. Its totient is φ = 18660000.

The previous prime is 56543429. The next prime is 56543447. The reversal of 56543436 is 63434565.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 56543436.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4140 + ... + 11411.

It is an arithmetic number, because the mean of its divisors is an integer number (4009824).

Almost surely, 2^56543436 is an apocalyptic number.

It is an amenable number.

56543436 is an abundant number, since it is smaller than the sum of its proper divisors (87810228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56543436 is a wasteful number, since it uses less digits than its factorization.

56543436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15662 (or 15657 counting only the distinct ones).

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

The square root of 56543436 is about 7519.5369538290. The cubic root of 56543436 is about 383.8198210694.

The spelling of 56543436 in words is "fifty-six million, five hundred forty-three thousand, four hundred thirty-six".