50172137 has 4 divisors (see below), whose sum is σ = 50198016. Its totient is φ = 50146260.

The previous prime is 50172121. The next prime is 50172149. The reversal of 50172137 is 73127105.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50172137 - 2⁴ = 50172121 is a prime.

It is a super-2 number, since 2×50172137² = 5034486662293538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50172107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9773 + ... + 13994.

It is an arithmetic number, because the mean of its divisors is an integer number (12549504).

Almost surely, 2^50172137 is an apocalyptic number.

It is an amenable number.

50172137 is a deficient number, since it is larger than the sum of its proper divisors (25879).

50172137 is a wasteful number, since it uses less digits than its factorization.

50172137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25878.

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

The square root of 50172137 is about 7083.2292776671. The cubic root of 50172137 is about 368.8254377118.

The spelling of 50172137 in words is "fifty million, one hundred seventy-two thousand, one hundred thirty-seven".