51902625 has 16 divisors (see below), whose sum is σ = 86366592. Its totient is φ = 27681200.

The previous prime is 51902611. The next prime is 51902629. The reversal of 51902625 is 52620915.

It is a happy number.

It is not a de Polignac number, because 51902625 - 2⁷ = 51902497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51902592 and 51902601.

It is not an unprimeable number, because it can be changed into a prime (51902629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68829 + ... + 69578.

It is an arithmetic number, because the mean of its divisors is an integer number (5397912).

Almost surely, 2^51902625 is an apocalyptic number.

It is an amenable number.

51902625 is a deficient number, since it is larger than the sum of its proper divisors (34463967).

51902625 is a wasteful number, since it uses less digits than its factorization.

51902625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138425 (or 138415 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 51902625 is about 7204.3476456928. The cubic root of 51902625 is about 373.0179872348.

The spelling of 51902625 in words is "fifty-one million, nine hundred two thousand, six hundred twenty-five".