50613565 has 4 divisors (see below), whose sum is σ = 60736284. Its totient is φ = 40490848.

The previous prime is 50613559. The next prime is 50613599. The reversal of 50613565 is 56531605.

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 6497401 + 44116164 = 2549^2 + 6642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50613565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5061352 + ... + 5061361.

It is an arithmetic number, because the mean of its divisors is an integer number (15184071).

Almost surely, 2^50613565 is an apocalyptic number.

It is an amenable number.

50613565 is a deficient number, since it is larger than the sum of its proper divisors (10122719).

50613565 is a wasteful number, since it uses less digits than its factorization.

50613565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10122718.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 50613565 is about 7114.3211201070. The cubic root of 50613565 is about 369.9039560793.

The spelling of 50613565 in words is "fifty million, six hundred thirteen thousand, five hundred sixty-five".