55543500120 has 64 divisors (see below), whose sum is σ = 168739776000. Its totient is φ = 14624108928.

The previous prime is 55543500043. The next prime is 55543500143. The reversal of 55543500120 is 2100534555.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2920030 + ... + 2938989.

It is an arithmetic number, because the mean of its divisors is an integer number (2636559000).

Almost surely, 2^55543500120 is an apocalyptic number.

It is an amenable number.

55543500120 is an abundant number, since it is smaller than the sum of its proper divisors (113196275880).

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

55543500120 is a wasteful number, since it uses less digits than its factorization.

55543500120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5859112 (or 5859108 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 55543500120 in words is "fifty-five billion, five hundred forty-three million, five hundred thousand, one hundred twenty".