50915257 has 4 divisors (see below), whose sum is σ = 51239716. Its totient is φ = 50590800.

The previous prime is 50915159. The next prime is 50915273. The reversal of 50915257 is 75251905.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8156736 + 42758521 = 2856^2 + 6539^2 .

It is a cyclic number.

It is not a de Polignac number, because 50915257 - 2⁷ = 50915129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50913257) 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, 161994 + ... + 162307.

It is an arithmetic number, because the mean of its divisors is an integer number (12809929).

Almost surely, 2^50915257 is an apocalyptic number.

It is an amenable number.

50915257 is a deficient number, since it is larger than the sum of its proper divisors (324459).

50915257 is a wasteful number, since it uses less digits than its factorization.

50915257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324458.

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 50915257 is about 7135.4927650443. The cubic root of 50915257 is about 370.6374620980.

The spelling of 50915257 in words is "fifty million, nine hundred fifteen thousand, two hundred fifty-seven".