56621435 has 16 divisors (see below), whose sum is σ = 74208960. Its totient is φ = 41220480.

The previous prime is 56621431. The next prime is 56621443. The reversal of 56621435 is 53412665.

It is not a de Polignac number, because 56621435 - 2² = 56621431 is a prime.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (56621431) 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, 1520 + ... + 10749.

It is an arithmetic number, because the mean of its divisors is an integer number (4638060).

Almost surely, 2^56621435 is an apocalyptic number.

56621435 is a deficient number, since it is larger than the sum of its proper divisors (17587525).

56621435 is a wasteful number, since it uses less digits than its factorization.

56621435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12358.

The product of its digits is 21600, while the sum is 32.

The square root of 56621435 is about 7524.7215895341. The cubic root of 56621435 is about 383.9962270860.

The spelling of 56621435 in words is "fifty-six million, six hundred twenty-one thousand, four hundred thirty-five".