51132925 has 6 divisors (see below), whose sum is σ = 63404858. Its totient is φ = 40906320.

The previous prime is 51132911. The next prime is 51132929. The reversal of 51132925 is 52923115.

It can be written as a sum of positive squares in 3 ways, for example, as 2090916 + 49042009 = 1446^2 + 7003^2 .

It is not a de Polignac number, because 51132925 - 2⁷ = 51132797 is a prime.

It is a super-2 number, since 2×51132925² = 5229152038111250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51132893 and 51132902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51132929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1022634 + ... + 1022683.

Almost surely, 2^51132925 is an apocalyptic number.

It is an amenable number.

51132925 is a deficient number, since it is larger than the sum of its proper divisors (12271933).

51132925 is a wasteful number, since it uses less digits than its factorization.

51132925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045327 (or 2045322 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 51132925 is about 7150.7289838170. The cubic root of 51132925 is about 371.1648824049.

The spelling of 51132925 in words is "fifty-one million, one hundred thirty-two thousand, nine hundred twenty-five".