51610525 has 6 divisors (see below), whose sum is σ = 63997082. Its totient is φ = 41288400.

The previous prime is 51610511. The next prime is 51610541. The reversal of 51610525 is 52501615.

51610525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 10381284 + 41229241 = 3222^2 + 6421^2 .

It is not a de Polignac number, because 51610525 - 2¹¹ = 51608477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 2064421 = 51610525 / (5 + 1 + 6 + 1 + 0 + 5 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51610525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1032186 + ... + 1032235.

Almost surely, 2^51610525 is an apocalyptic number.

It is an amenable number.

51610525 is a deficient number, since it is larger than the sum of its proper divisors (12386557).

51610525 is a wasteful number, since it uses less digits than its factorization.

51610525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064431 (or 2064426 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 51610525 is about 7184.0465616531. The cubic root of 51610525 is about 372.3169077536.

The spelling of 51610525 in words is "fifty-one million, six hundred ten thousand, five hundred twenty-five".