51650925 has 12 divisors (see below), whose sum is σ = 85396320. Its totient is φ = 27547120.

The previous prime is 51650917. The next prime is 51650971. The reversal of 51650925 is 52905615.

It is not a de Polignac number, because 51650925 - 2³ = 51650917 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 344265 + ... + 344414.

It is an arithmetic number, because the mean of its divisors is an integer number (7116360).

Almost surely, 2^51650925 is an apocalyptic number.

It is an amenable number.

51650925 is a deficient number, since it is larger than the sum of its proper divisors (33745395).

51650925 is a wasteful number, since it uses less digits than its factorization.

51650925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688692 (or 688687 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 51650925 is about 7186.8577973966. The cubic root of 51650925 is about 372.4140305788.

The spelling of 51650925 in words is "fifty-one million, six hundred fifty thousand, nine hundred twenty-five".