51310025 has 12 divisors (see below), whose sum is σ = 68519052. Its totient is φ = 37890240.

The previous prime is 51310003. The next prime is 51310027. The reversal of 51310025 is 52001315.

It can be written as a sum of positive squares in 6 ways, for example, as 6901129 + 44408896 = 2627^2 + 6664^2 .

It is not a de Polignac number, because 51310025 - 2¹² = 51305929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51309985 and 51310012.

It is not an unprimeable number, because it can be changed into a prime (51310027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78614 + ... + 79263.

It is an arithmetic number, because the mean of its divisors is an integer number (5709921).

Almost surely, 2^51310025 is an apocalyptic number.

It is an amenable number.

51310025 is a deficient number, since it is larger than the sum of its proper divisors (17209027).

51310025 is a wasteful number, since it uses less digits than its factorization.

51310025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157900 (or 157895 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 51310025 is about 7163.1016326728. The cubic root of 51310025 is about 371.5929011866.

The spelling of 51310025 in words is "fifty-one million, three hundred ten thousand, twenty-five".