50725813 has 8 divisors (see below), whose sum is σ = 51328728. Its totient is φ = 50125824.

The previous prime is 50725771. The next prime is 50725819. The reversal of 50725813 is 31852705.

It can be written as a sum of positive squares in 4 ways, for example, as 1697809 + 49028004 = 1303^2 + 7002^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50725813 - 2¹³ = 50717621 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 (50725819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66631 + ... + 67387.

It is an arithmetic number, because the mean of its divisors is an integer number (6416091).

Almost surely, 2^50725813 is an apocalyptic number.

It is an amenable number.

50725813 is a deficient number, since it is larger than the sum of its proper divisors (602915).

50725813 is a wasteful number, since it uses less digits than its factorization.

50725813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 50725813 is about 7122.2056274724. The cubic root of 50725813 is about 370.1772051098.

The spelling of 50725813 in words is "fifty million, seven hundred twenty-five thousand, eight hundred thirteen".