50913 has 6 divisors (see below), whose sum is σ = 73554. Its totient is φ = 33936.

The previous prime is 50909. The next prime is 50923. The reversal of 50913 is 31905.

50913 is nontrivially palindromic in base 8.

50913 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 33489 + 17424 = 183^2 + 132^2 .

It is not a de Polignac number, because 50913 - 2² = 50909 is a prime.

It is an Ulam number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2820 + ... + 2837.

It is an arithmetic number, because the mean of its divisors is an integer number (12259).

2⁵⁰⁹¹³ is an apocalyptic number.

It is an amenable number.

50913 is a deficient number, since it is larger than the sum of its proper divisors (22641).

50913 is a wasteful number, since it uses less digits than its factorization.

50913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5663 (or 5660 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 50913 is about 225.6390923577. The cubic root of 50913 is about 37.0631985409.

The spelling of 50913 in words is "fifty thousand, nine hundred thirteen".