51682815 has 12 divisors (see below), whose sum is σ = 89583624. Its totient is φ = 27564144.

The previous prime is 51682801. The next prime is 51682823. The reversal of 51682815 is 51828615.

It is not a de Polignac number, because 51682815 - 2¹⁸ = 51420671 is a prime.

It is a super-2 number, since 2×51682815² = 5342226732648450, 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 51682815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 574209 + ... + 574298.

It is an arithmetic number, because the mean of its divisors is an integer number (7465302).

Almost surely, 2^51682815 is an apocalyptic number.

51682815 is a deficient number, since it is larger than the sum of its proper divisors (37900809).

51682815 is a wasteful number, since it uses less digits than its factorization.

51682815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148518 (or 1148515 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 51682815 is about 7189.0760880658. The cubic root of 51682815 is about 372.4906593457.

The spelling of 51682815 in words is "fifty-one million, six hundred eighty-two thousand, eight hundred fifteen".