55125516 has 24 divisors (see below), whose sum is σ = 128746800. Its totient is φ = 18357952.

The previous prime is 55125487. The next prime is 55125547. The reversal of 55125516 is 61552155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22210 + ... + 24566.

It is an arithmetic number, because the mean of its divisors is an integer number (5364450).

Almost surely, 2^55125516 is an apocalyptic number.

It is an amenable number.

55125516 is an abundant number, since it is smaller than the sum of its proper divisors (73621284).

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

55125516 is a wasteful number, since it uses less digits than its factorization.

55125516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4313 (or 4311 counting only the distinct ones).

The product of its digits is 7500, while the sum is 30.

The square root of 55125516 is about 7424.6559516250. The cubic root of 55125516 is about 380.5843180357.

The spelling of 55125516 in words is "fifty-five million, one hundred twenty-five thousand, five hundred sixteen".