50513125 has 20 divisors (see below), whose sum is σ = 67987612. Its totient is φ = 37296000.

The previous prime is 50513119. The next prime is 50513131. The reversal of 50513125 is 52131505.

It is an interprime number because it is at equal distance from previous prime (50513119) and next prime (50513131).

It can be written as a sum of positive squares in 10 ways, for example, as 41757444 + 8755681 = 6462^2 + 2959^2 .

It is a de Polignac number, because none of the positive numbers 2^k-50513125 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50513096 and 50513105.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 5017 + ... + 11233.

Almost surely, 2^50513125 is an apocalyptic number.

It is an amenable number.

50513125 is a deficient number, since it is larger than the sum of its proper divisors (17474487).

50513125 is an equidigital number, since it uses as much as digits as its factorization.

50513125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6250 (or 6235 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 50513125 is about 7107.2586135584. The cubic root of 50513125 is about 369.6591089607.

The spelling of 50513125 in words is "fifty million, five hundred thirteen thousand, one hundred twenty-five".