56455620 has 48 divisors (see below), whose sum is σ = 170237760. Its totient is φ = 13896576.

The previous prime is 56455613. The next prime is 56455621. The reversal of 56455620 is 2655465.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (56455621) 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, 35410 + ... + 36969.

It is an arithmetic number, because the mean of its divisors is an integer number (3546620).

Almost surely, 2^56455620 is an apocalyptic number.

It is an amenable number.

56455620 is an abundant number, since it is smaller than the sum of its proper divisors (113782140).

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

56455620 is a wasteful number, since it uses less digits than its factorization.

56455620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72404 (or 72402 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 56455620 is about 7513.6954955601. The cubic root of 56455620 is about 383.6210182380.

It can be divided in two parts, 56455 and 620, that added together give a palindrome (57075).

The spelling of 56455620 in words is "fifty-six million, four hundred fifty-five thousand, six hundred twenty".