51908825 has 12 divisors (see below), whose sum is σ = 64662528. Its totient is φ = 41336400.

The previous prime is 51908789. The next prime is 51908851. The reversal of 51908825 is 52880915.

It is not a de Polignac number, because 51908825 - 2⁶ = 51908761 is a prime.

It is a super-2 number, since 2×51908825² = 5389052225761250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 920 + ... + 10230.

It is an arithmetic number, because the mean of its divisors is an integer number (5388544).

Almost surely, 2^51908825 is an apocalyptic number.

It is an amenable number.

51908825 is a deficient number, since it is larger than the sum of its proper divisors (12753703).

51908825 is a wasteful number, since it uses less digits than its factorization.

51908825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9544 (or 9539 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 51908825 is about 7204.7779285693. Note that the first 3 decimals coincide. The cubic root of 51908825 is about 373.0328395307.

The spelling of 51908825 in words is "fifty-one million, nine hundred eight thousand, eight hundred twenty-five".