50565513 has 4 divisors (see below), whose sum is σ = 67420688. Its totient is φ = 33710340.

The previous prime is 50565511. The next prime is 50565527. The reversal of 50565513 is 31556505.

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 not a de Polignac number, because 50565513 - 2¹ = 50565511 is a prime.

It is a super-2 number, since 2×50565513² = 5113742209906338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50565511) 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, 8427583 + ... + 8427588.

It is an arithmetic number, because the mean of its divisors is an integer number (16855172).

Almost surely, 2^50565513 is an apocalyptic number.

It is an amenable number.

50565513 is a deficient number, since it is larger than the sum of its proper divisors (16855175).

50565513 is a wasteful number, since it uses less digits than its factorization.

50565513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16855174.

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 50565513 is about 7110.9431863853. The cubic root of 50565513 is about 369.7868580057.

The spelling of 50565513 in words is "fifty million, five hundred sixty-five thousand, five hundred thirteen".