51630125 has 16 divisors (see below), whose sum is σ = 67828800. Its totient is φ = 39128400.

The previous prime is 51630091. The next prime is 51630149. The reversal of 51630125 is 52103615.

It is not a de Polignac number, because 51630125 - 2¹⁴ = 51613741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51630125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8495 + ... + 13244.

It is an arithmetic number, because the mean of its divisors is an integer number (4239300).

Almost surely, 2^51630125 is an apocalyptic number.

It is an amenable number.

51630125 is a deficient number, since it is larger than the sum of its proper divisors (16198675).

51630125 is a wasteful number, since it uses less digits than its factorization.

51630125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21773 (or 21763 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 51630125 is about 7185.4105658619. The cubic root of 51630125 is about 372.3640330755.

The spelling of 51630125 in words is "fifty-one million, six hundred thirty thousand, one hundred twenty-five".