51903325 has 6 divisors (see below), whose sum is σ = 64360154. Its totient is φ = 41522640.

The previous prime is 51903311. The next prime is 51903337. The reversal of 51903325 is 52330915.

It can be written as a sum of positive squares in 3 ways, for example, as 3767481 + 48135844 = 1941^2 + 6938^2 .

It is not a de Polignac number, because 51903325 - 2⁷ = 51903197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51903293 and 51903302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1038042 + ... + 1038091.

Almost surely, 2^51903325 is an apocalyptic number.

It is an amenable number.

51903325 is a deficient number, since it is larger than the sum of its proper divisors (12456829).

51903325 is a wasteful number, since it uses less digits than its factorization.

51903325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076143 (or 2076138 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 51903325 is about 7204.3962273045. The cubic root of 51903325 is about 373.0196641661.

It can be divided in two parts, 5190 and 3325, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 51903325 in words is "fifty-one million, nine hundred three thousand, three hundred twenty-five".