50565917 has 4 divisors (see below), whose sum is σ = 50580156. Its totient is φ = 50551680.

The previous prime is 50565901. The next prime is 50565959. The reversal of 50565917 is 71956505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 18541636 + 32024281 = 4306^2 + 5659^2 .

It is a cyclic number.

It is not a de Polignac number, because 50565917 - 2⁴ = 50565901 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 (50565817) 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, 3053 + ... + 10509.

It is an arithmetic number, because the mean of its divisors is an integer number (12645039).

Almost surely, 2^50565917 is an apocalyptic number.

It is an amenable number.

50565917 is a deficient number, since it is larger than the sum of its proper divisors (14239).

50565917 is an equidigital number, since it uses as much as digits as its factorization.

50565917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14238.

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 50565917 is about 7110.9715932494. The cubic root of 50565917 is about 369.7878428237.

The spelling of 50565917 in words is "fifty million, five hundred sixty-five thousand, nine hundred seventeen".