50172317 has 16 divisors (see below), whose sum is σ = 55413120. Its totient is φ = 45144000.

The previous prime is 50172307. The next prime is 50172319. The reversal of 50172317 is 71327105.

It is a cyclic number.

It is not a de Polignac number, because 50172317 - 2⁴ = 50172301 is a prime.

It is a super-2 number, since 2×50172317² = 5034522786296978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50172319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119534 + ... + 119952.

It is an arithmetic number, because the mean of its divisors is an integer number (3463320).

Almost surely, 2^50172317 is an apocalyptic number.

It is an amenable number.

50172317 is a deficient number, since it is larger than the sum of its proper divisors (5240803).

50172317 is a wasteful number, since it uses less digits than its factorization.

50172317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 50172317 is about 7083.2419837247. The cubic root of 50172317 is about 368.8258787833.

The spelling of 50172317 in words is "fifty million, one hundred seventy-two thousand, three hundred seventeen".