55544520 has 32 divisors (see below), whose sum is σ = 166633920. Its totient is φ = 14811840.

The previous prime is 55544509. The next prime is 55544521. The reversal of 55544520 is 2544555.

55544520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (55544521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231316 + ... + 231555.

It is an arithmetic number, because the mean of its divisors is an integer number (5207310).

Almost surely, 2^55544520 is an apocalyptic number.

It is an amenable number.

55544520 is an abundant number, since it is smaller than the sum of its proper divisors (111089400).

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

55544520 is a wasteful number, since it uses less digits than its factorization.

55544520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462885 (or 462881 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 55544520 is about 7452.8196006612. The cubic root of 55544520 is about 381.5461473961.

The spelling of 55544520 in words is "fifty-five million, five hundred forty-four thousand, five hundred twenty".