50688613 has 4 divisors (see below), whose sum is σ = 50719788. Its totient is φ = 50657440.

The previous prime is 50688601. The next prime is 50688629. The reversal of 50688613 is 31688605.

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 31169889 + 19518724 = 5583^2 + 4418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50688613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50686613) 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, 13006 + ... + 16447.

It is an arithmetic number, because the mean of its divisors is an integer number (12679947).

Almost surely, 2^50688613 is an apocalyptic number.

It is an amenable number.

50688613 is a deficient number, since it is larger than the sum of its proper divisors (31175).

50688613 is a wasteful number, since it uses less digits than its factorization.

50688613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31174.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 50688613 is about 7119.5935979521. The cubic root of 50688613 is about 370.0866926151.

The spelling of 50688613 in words is "fifty million, six hundred eighty-eight thousand, six hundred thirteen".