50172175557 has 12 divisors (see below), whose sum is σ = 82823908960. Its totient is φ = 28669814568.

The previous prime is 50172175519. The next prime is 50172175579. The reversal of 50172175557 is 75557127105.

50172175557 is a `hidden beast` number, since 5 + 0 + 1 + 7 + 21 + 75 + 557 = 666.

It is not a de Polignac number, because 50172175557 - 2¹⁸ = 50171913413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50172175507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 398191807 + ... + 398191932.

Almost surely, 2^50172175557 is an apocalyptic number.

It is an amenable number.

50172175557 is a deficient number, since it is larger than the sum of its proper divisors (32651733403).

50172175557 is a wasteful number, since it uses less digits than its factorization.

50172175557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796383752 (or 796383749 counting only the distinct ones).

The product of its (nonzero) digits is 428750, while the sum is 45.

The spelling of 50172175557 in words is "fifty billion, one hundred seventy-two million, one hundred seventy-five thousand, five hundred fifty-seven".