55272247039920 has 160 divisors (see below), whose sum is σ = 182832783667200. Its totient is φ = 13772233930752.

The previous prime is 55272247039883. The next prime is 55272247040047. The reversal of 55272247039920 is 2993074227255.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82688400 + ... + 83354159.

It is an arithmetic number, because the mean of its divisors is an integer number (1142704897920).

Almost surely, 2^{55272247039920} is an apocalyptic number.

It is an amenable number.

55272247039920 is an abundant number, since it is smaller than the sum of its proper divisors (127560536627280).

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

55272247039920 is a wasteful number, since it uses less digits than its factorization.

55272247039920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166042667 (or 166042661 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 57.

The spelling of 55272247039920 in words is "fifty-five trillion, two hundred seventy-two billion, two hundred forty-seven million, thirty-nine thousand, nine hundred twenty".