56435520 has 56 divisors (see below), whose sum is σ = 179185824. Its totient is φ = 15049216.

The previous prime is 56435501. The next prime is 56435521. The reversal of 56435520 is 2553465.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56435521) 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 7 ways as a sum of consecutive naturals, for example, 28434 + ... + 30353.

Almost surely, 2^56435520 is an apocalyptic number.

It is an amenable number.

56435520 is an abundant number, since it is smaller than the sum of its proper divisors (122750304).

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

56435520 is a wasteful number, since it uses less digits than its factorization.

56435520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58807 (or 58797 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 56435520 is about 7512.3578189540. The cubic root of 56435520 is about 383.5754857310.

Adding to 56435520 its reverse (2553465), we get a palindrome (58988985).

The spelling of 56435520 in words is "fifty-six million, four hundred thirty-five thousand, five hundred twenty".