55556512120 has 64 divisors (see below), whose sum is σ = 125513388000. Its totient is φ = 22131916800.

The previous prime is 55556512093. The next prime is 55556512129. The reversal of 55556512120 is 2121565555.

It is a self number, because there is not a number n which added to its sum of digits gives 55556512120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55556512129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10791387 + ... + 10796533.

Almost surely, 2^55556512120 is an apocalyptic number.

It is an amenable number.

55556512120 is an abundant number, since it is smaller than the sum of its proper divisors (69956875880).

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

55556512120 is a wasteful number, since it uses less digits than its factorization.

55556512120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6208 (or 6204 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 37.

The spelling of 55556512120 in words is "fifty-five billion, five hundred fifty-six million, five hundred twelve thousand, one hundred twenty".