51838615 has 16 divisors (see below), whose sum is σ = 63360000. Its totient is φ = 40708512.

The previous prime is 51838613. The next prime is 51838649. The reversal of 51838615 is 51683815.

It is a cyclic number.

It is not a de Polignac number, because 51838615 - 2¹ = 51838613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51838613) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 103636 + ... + 104134.

It is an arithmetic number, because the mean of its divisors is an integer number (3960000).

Almost surely, 2^51838615 is an apocalyptic number.

51838615 is a deficient number, since it is larger than the sum of its proper divisors (11521385).

51838615 is a wasteful number, since it uses less digits than its factorization.

51838615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846.

The product of its digits is 28800, while the sum is 37.

The square root of 51838615 is about 7199.9038188020. The cubic root of 51838615 is about 372.8645800699.

The spelling of 51838615 in words is "fifty-one million, eight hundred thirty-eight thousand, six hundred fifteen".