55864620 has 96 divisors (see below), whose sum is σ = 198643200. Its totient is φ = 12768192.

The previous prime is 55864609. The next prime is 55864621. The reversal of 55864620 is 2646855.

55864620 is a `hidden beast` number, since 5 + 5 + 8 + 646 + 2 + 0 = 666.

55864620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (55864621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3610 + ... + 11169.

It is an arithmetic number, because the mean of its divisors is an integer number (2069200).

Almost surely, 2^55864620 is an apocalyptic number.

It is an amenable number.

55864620 is an abundant number, since it is smaller than the sum of its proper divisors (142778580).

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

55864620 is a wasteful number, since it uses less digits than its factorization.

55864620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14804 (or 14796 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 55864620 is about 7474.2638433494. The cubic root of 55864620 is about 382.2776870390.

The spelling of 55864620 in words is "fifty-five million, eight hundred sixty-four thousand, six hundred twenty".