55994320 has 40 divisors (see below), whose sum is σ = 133712424. Its totient is φ = 21791232.

The previous prime is 55994297. The next prime is 55994321. The reversal of 55994320 is 2349955.

It can be written as a sum of positive squares in 4 ways, for example, as 24049216 + 31945104 = 4904^2 + 5652^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 55994320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55994321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6499 + ... + 12418.

Almost surely, 2^55994320 is an apocalyptic number.

It is an amenable number.

55994320 is an abundant number, since it is smaller than the sum of its proper divisors (77718104).

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

55994320 is a wasteful number, since it uses less digits than its factorization.

55994320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18967 (or 18961 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 55994320 is about 7482.9352529606. The cubic root of 55994320 is about 382.5733010587.

The spelling of 55994320 in words is "fifty-five million, nine hundred ninety-four thousand, three hundred twenty".