564550920 has 96 divisors (see below), whose sum is σ = 1894014720. Its totient is φ = 145687680.

The previous prime is 564550897. The next prime is 564550937. The reversal of 564550920 is 29055465.

564550920 is a `hidden beast` number, since 5 + 645 + 5 + 0 + 9 + 2 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14134 + ... + 36453.

It is an arithmetic number, because the mean of its divisors is an integer number (19729320).

Almost surely, 2^564550920 is an apocalyptic number.

It is an amenable number.

564550920 is an abundant number, since it is smaller than the sum of its proper divisors (1329463800).

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

564550920 is a wasteful number, since it uses less digits than its factorization.

564550920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50635 (or 50628 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 564550920 is about 23760.2803013769. The cubic root of 564550920 is about 826.4838529437.

It can be divided in two parts, 5645 and 50920, that added together give a palindrome (56565).

The spelling of 564550920 in words is "five hundred sixty-four million, five hundred fifty thousand, nine hundred twenty".