51315828 has 24 divisors (see below), whose sum is σ = 120006432. Its totient is φ = 17066784.

The previous prime is 51315799. The next prime is 51315841. The reversal of 51315828 is 82851315.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026 + ... + 10182.

It is an arithmetic number, because the mean of its divisors is an integer number (5000268).

Almost surely, 2^51315828 is an apocalyptic number.

It is an amenable number.

51315828 is an abundant number, since it is smaller than the sum of its proper divisors (68690604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51315828 is a wasteful number, since it uses less digits than its factorization.

51315828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9631 (or 9629 counting only the distinct ones).

The product of its digits is 9600, while the sum is 33.

The square root of 51315828 is about 7163.5066831825. The cubic root of 51315828 is about 371.6069093154.

The spelling of 51315828 in words is "fifty-one million, three hundred fifteen thousand, eight hundred twenty-eight".