55171507216 has 40 divisors (see below), whose sum is σ = 122308243200. Its totient is φ = 23617300224.

The previous prime is 55171507207. The next prime is 55171507273. The reversal of 55171507216 is 61270517155.

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, 191416 + ... + 383383.

It is an arithmetic number, because the mean of its divisors is an integer number (3057706080).

Almost surely, 2^55171507216 is an apocalyptic number.

55171507216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

55171507216 is an abundant number, since it is smaller than the sum of its proper divisors (67136735984).

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

55171507216 is a wasteful number, since it uses less digits than its factorization.

55171507216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575671 (or 575665 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 40.

The spelling of 55171507216 in words is "fifty-five billion, one hundred seventy-one million, five hundred seven thousand, two hundred sixteen".