51432625 has 16 divisors (see below), whose sum is σ = 64396800. Its totient is φ = 41012400.

The previous prime is 51432581. The next prime is 51432629. The reversal of 51432625 is 52623415.

It is not a de Polignac number, because 51432625 - 2⁹ = 51432113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51432593 and 51432602.

It is not an unprimeable number, because it can be changed into a prime (51432629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59446 + ... + 60304.

It is an arithmetic number, because the mean of its divisors is an integer number (4024800).

Almost surely, 2^51432625 is an apocalyptic number.

It is an amenable number.

51432625 is a deficient number, since it is larger than the sum of its proper divisors (12964175).

51432625 is an equidigital number, since it uses as much as digits as its factorization.

51432625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1343 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 51432625 is about 7171.6542722025. The cubic root of 51432625 is about 371.8886267163. Note that the first 3 decimals are identical.

The spelling of 51432625 in words is "fifty-one million, four hundred thirty-two thousand, six hundred twenty-five".