55724880 has 40 divisors (see below), whose sum is σ = 172747872. Its totient is φ = 14859904.

The previous prime is 55724873. The next prime is 55724897. The reversal of 55724880 is 8842755.

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

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115854 + ... + 116333.

Almost surely, 2^55724880 is an apocalyptic number.

It is an amenable number.

55724880 is an abundant number, since it is smaller than the sum of its proper divisors (117022992).

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

55724880 is a wasteful number, since it uses less digits than its factorization.

55724880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232203 (or 232197 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 55724880 is about 7464.9099123834. The cubic root of 55724880 is about 381.9586772183.

The spelling of 55724880 in words is "fifty-five million, seven hundred twenty-four thousand, eight hundred eighty".