51084625 has 8 divisors (see below), whose sum is σ = 63753768. Its totient is φ = 40867600.

The previous prime is 51084611. The next prime is 51084637. The reversal of 51084625 is 52648015.

It can be written as a sum of positive squares in 4 ways, for example, as 5764801 + 45319824 = 2401^2 + 6732^2 .

It is not a de Polignac number, because 51084625 - 2⁹ = 51084113 is a prime.

It is a super-2 number, since 2×51084625² = 5219277822781250, 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 7 ways as a sum of consecutive naturals, for example, 204214 + ... + 204463.

It is an arithmetic number, because the mean of its divisors is an integer number (7969221).

Almost surely, 2^51084625 is an apocalyptic number.

It is an amenable number.

51084625 is a deficient number, since it is larger than the sum of its proper divisors (12669143).

51084625 is an equidigital number, since it uses as much as digits as its factorization.

51084625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408692 (or 408682 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 51084625 is about 7147.3509078539. The cubic root of 51084625 is about 371.0479785283.

The spelling of 51084625 in words is "fifty-one million, eighty-four thousand, six hundred twenty-five".