51585525 has 24 divisors (see below), whose sum is σ = 94765760. Its totient is φ = 27511920.

The previous prime is 51585487. The next prime is 51585539. The reversal of 51585525 is 52558515.

51585525 is a `hidden beast` number, since 51 + 5 + 85 + 525 = 666.

51585525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51585525 - 2⁷ = 51585397 is a prime.

It is a super-2 number, since 2×51585525² = 5322132779051250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51585525.

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 23 ways as a sum of consecutive naturals, for example, 37537 + ... + 38886.

Almost surely, 2^51585525 is an apocalyptic number.

It is an amenable number.

51585525 is a deficient number, since it is larger than the sum of its proper divisors (43180235).

51585525 is a wasteful number, since it uses less digits than its factorization.

51585525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76442 (or 76431 counting only the distinct ones).

The product of its digits is 50000, while the sum is 36.

The square root of 51585525 is about 7182.3063844423. The cubic root of 51585525 is about 372.2567816068.

The spelling of 51585525 in words is "fifty-one million, five hundred eighty-five thousand, five hundred twenty-five".