55020531504 has 40 divisors (see below), whose sum is σ = 145977901360. Its totient is φ = 17844496128.

The previous prime is 55020531487. The next prime is 55020531523. The reversal of 55020531504 is 40513502055.

It is a happy number.

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, 15488239 + ... + 15491790.

It is an arithmetic number, because the mean of its divisors is an integer number (3649447534).

Almost surely, 2^55020531504 is an apocalyptic number.

It is an amenable number.

55020531504 is an abundant number, since it is smaller than the sum of its proper divisors (90957369856).

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

55020531504 is a wasteful number, since it uses less digits than its factorization.

55020531504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30980077 (or 30980071 counting only the distinct ones).

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

The spelling of 55020531504 in words is "fifty-five billion, twenty million, five hundred thirty-one thousand, five hundred four".