51150625 has 20 divisors (see below), whose sum is σ = 64379392. Its totient is φ = 40626000.

The previous prime is 51150623. The next prime is 51150661. The reversal of 51150625 is 52605115.

51150625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51150625 - 2¹ = 51150623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51150625.

It is not an unprimeable number, because it can be changed into a prime (51150623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 139192 + ... + 139558.

Almost surely, 2^51150625 is an apocalyptic number.

It is an amenable number.

51150625 is a deficient number, since it is larger than the sum of its proper divisors (13228767).

51150625 is an equidigital number, since it uses as much as digits as its factorization.

51150625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 51150625 is about 7151.9665127851. The cubic root of 51150625 is about 371.2077045234.

The spelling of 51150625 in words is "fifty-one million, one hundred fifty thousand, six hundred twenty-five".