51553525 has 12 divisors (see below), whose sum is σ = 64030500. Its totient is φ = 41175680.

The previous prime is 51553507. The next prime is 51553547. The reversal of 51553525 is 52535515.

It is a happy number.

51553525 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 6 ways, for example, as 5340721 + 46212804 = 2311^2 + 6798^2 .

It is not a de Polignac number, because 51553525 - 2⁵ = 51553493 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 18951 + ... + 21499.

It is an arithmetic number, because the mean of its divisors is an integer number (5335875).

Almost surely, 2^51553525 is an apocalyptic number.

It is an amenable number.

51553525 is a deficient number, since it is larger than the sum of its proper divisors (12476975).

51553525 is a wasteful number, since it uses less digits than its factorization.

51553525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368 (or 3363 counting only the distinct ones).

The product of its digits is 18750, while the sum is 31.

The square root of 51553525 is about 7180.0783421910. The cubic root of 51553525 is about 372.1797917856.

The spelling of 51553525 in words is "fifty-one million, five hundred fifty-three thousand, five hundred twenty-five".