55184400 has 90 divisors (see below), whose sum is σ = 191517690. Its totient is φ = 14714880.

The previous prime is 55184399. The next prime is 55184449. The reversal of 55184400 is 448155.

It can be written as a sum of positive squares in 3 ways, for example, as 9216 + 55175184 = 96^2 + 7428^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4065 + ... + 11264.

Almost surely, 2^55184400 is an apocalyptic number.

55184400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55184400 is an abundant number, since it is smaller than the sum of its proper divisors (136333290).

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

55184400 is a wasteful number, since it uses less digits than its factorization.

55184400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15353 (or 15339 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 55184400 is about 7428.6203295094. The cubic root of 55184400 is about 380.7197807271.

The spelling of 55184400 in words is "fifty-five million, one hundred eighty-four thousand, four hundred".