51525375 has 32 divisors (see below), whose sum is σ = 93540096. Its totient is φ = 24980000.

The previous prime is 51525319. The next prime is 51525377. The reversal of 51525375 is 57352515.

It is not a de Polignac number, because 51525375 - 2⁶ = 51525311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51525377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2121 + ... + 10370.

It is an arithmetic number, because the mean of its divisors is an integer number (2923128).

Almost surely, 2^51525375 is an apocalyptic number.

51525375 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51525375 is a deficient number, since it is larger than the sum of its proper divisors (42014721).

51525375 is a wasteful number, since it uses less digits than its factorization.

51525375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12520 (or 12510 counting only the distinct ones).

The product of its digits is 26250, while the sum is 33.

The square root of 51525375 is about 7178.1177895044. The cubic root of 51525375 is about 372.1120384579.

The spelling of 51525375 in words is "fifty-one million, five hundred twenty-five thousand, three hundred seventy-five".