55620384 has 24 divisors (see below), whose sum is σ = 146003760. Its totient is φ = 18540096.

The previous prime is 55620377. The next prime is 55620401. The reversal of 55620384 is 48302655.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289594 + ... + 289785.

It is an arithmetic number, because the mean of its divisors is an integer number (6083490).

Almost surely, 2^55620384 is an apocalyptic number.

It is an amenable number.

55620384 is an abundant number, since it is smaller than the sum of its proper divisors (90383376).

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

55620384 is a wasteful number, since it uses less digits than its factorization.

55620384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579392 (or 579384 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 55620384 is about 7457.9074813248. The cubic root of 55620384 is about 381.7197765781.

The spelling of 55620384 in words is "fifty-five million, six hundred twenty thousand, three hundred eighty-four".