55172185502022 has 48 divisors (see below), whose sum is σ = 119857833401280. Its totient is φ = 18341792506800.

The previous prime is 55172185502003. The next prime is 55172185502029. The reversal of 55172185502022 is 22020558127155.

55172185502022 is a `hidden beast` number, since 5 + 5 + 1 + 72 + 1 + 8 + 550 + 2 + 0 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55172185502029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 535959897 + ... + 536062827.

It is an arithmetic number, because the mean of its divisors is an integer number (2497038195860).

Almost surely, 2^{55172185502022} is an apocalyptic number.

55172185502022 is an abundant number, since it is smaller than the sum of its proper divisors (64685647899258).

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

55172185502022 is a wasteful number, since it uses less digits than its factorization.

55172185502022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181889 (or 181886 counting only the distinct ones).

The product of its (nonzero) digits is 560000, while the sum is 45.

The spelling of 55172185502022 in words is "fifty-five trillion, one hundred seventy-two billion, one hundred eighty-five million, five hundred two thousand, twenty-two".