51360625 has 20 divisors (see below), whose sum is σ = 65944516. Its totient is φ = 39960000.

The previous prime is 51360623. The next prime is 51360637. The reversal of 51360625 is 52606315.

It can be written as a sum of positive squares in 10 ways, for example, as 23892544 + 27468081 = 4888^2 + 5241^2 .

It is not a de Polignac number, because 51360625 - 2¹ = 51360623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51360593 and 51360602.

It is not an unprimeable number, because it can be changed into a prime (51360623) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22015 + ... + 24235.

Almost surely, 2^51360625 is an apocalyptic number.

It is an amenable number.

51360625 is a deficient number, since it is larger than the sum of its proper divisors (14583891).

51360625 is an equidigital number, since it uses as much as digits as its factorization.

51360625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278 (or 2263 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 51360625 is about 7166.6327518577. The cubic root of 51360625 is about 371.7150113290.

The spelling of 51360625 in words is "fifty-one million, three hundred sixty thousand, six hundred twenty-five".