55920384 has 108 divisors (see below), whose sum is σ = 173727736. Its totient is φ = 17197056.

The previous prime is 55920349. The next prime is 55920419. The reversal of 55920384 is 48302955.

55920384 is a `hidden beast` number, since 559 + 20 + 3 + 84 = 666.

It is an interprime number because it is at equal distance from previous prime (55920349) and next prime (55920419).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29019 + ... + 30885.

Almost surely, 2^55920384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55920384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86863868).

55920384 is an abundant number, since it is smaller than the sum of its proper divisors (117807352).

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

55920384 is a wasteful number, since it uses less digits than its factorization.

55920384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902 (or 1885 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 55920384 is about 7477.9933137173. The cubic root of 55920384 is about 382.4048411238.

The spelling of 55920384 in words is "fifty-five million, nine hundred twenty thousand, three hundred eighty-four".