51335525 has 6 divisors (see below), whose sum is σ = 63656082. Its totient is φ = 41068400.

The previous prime is 51335521. The next prime is 51335533. The reversal of 51335525 is 52553315.

51335525 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 10452289 + 40883236 = 3233^2 + 6394^2 .

It is not a de Polignac number, because 51335525 - 2² = 51335521 is a prime.

It is a super-2 number, since 2×51335525² = 5270672254051250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51335521) by changing a digit.

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, 1026686 + ... + 1026735.

It is an arithmetic number, because the mean of its divisors is an integer number (10609347).

Almost surely, 2^51335525 is an apocalyptic number.

It is an amenable number.

51335525 is a deficient number, since it is larger than the sum of its proper divisors (12320557).

51335525 is a wasteful number, since it uses less digits than its factorization.

51335525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053431 (or 2053426 counting only the distinct ones).

The product of its digits is 11250, while the sum is 29.

The square root of 51335525 is about 7164.8813667778. The cubic root of 51335525 is about 371.6544489360.

The spelling of 51335525 in words is "fifty-one million, three hundred thirty-five thousand, five hundred twenty-five".