50515257 has 8 divisors (see below), whose sum is σ = 72534784. Its totient is φ = 31086288.

The previous prime is 50515247. The next prime is 50515277. The reversal of 50515257 is 75251505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50515257 - 2⁶ = 50515193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50515247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647593 + ... + 647670.

It is an arithmetic number, because the mean of its divisors is an integer number (9066848).

Almost surely, 2^50515257 is an apocalyptic number.

It is an amenable number.

50515257 is a deficient number, since it is larger than the sum of its proper divisors (22019527).

50515257 is a wasteful number, since it uses less digits than its factorization.

50515257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295279.

The product of its (nonzero) digits is 8750, while the sum is 30.

The square root of 50515257 is about 7107.4085994827. The cubic root of 50515257 is about 369.6643096034.

The spelling of 50515257 in words is "fifty million, five hundred fifteen thousand, two hundred fifty-seven".