51317325 has 18 divisors (see below), whose sum is σ = 91915434. Its totient is φ = 27369120.

The previous prime is 51317293. The next prime is 51317341. The reversal of 51317325 is 52371315.

It can be written as a sum of positive squares in 3 ways, for example, as 594441 + 50722884 = 771^2 + 7122^2 .

It is not a de Polignac number, because 51317325 - 2⁵ = 51317293 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 113814 + ... + 114263.

It is an arithmetic number, because the mean of its divisors is an integer number (5106413).

Almost surely, 2^51317325 is an apocalyptic number.

It is an amenable number.

51317325 is a deficient number, since it is larger than the sum of its proper divisors (40598109).

51317325 is a wasteful number, since it uses less digits than its factorization.

51317325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228093 (or 228085 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 51317325 is about 7163.6111703526. The cubic root of 51317325 is about 371.6105228212.

The spelling of 51317325 in words is "fifty-one million, three hundred seventeen thousand, three hundred twenty-five".