51589915 has 8 divisors (see below), whose sum is σ = 66670128. Its totient is φ = 38097120.

The previous prime is 51589913. The next prime is 51589939. The reversal of 51589915 is 51998515.

51589915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51589915 - 2¹ = 51589913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51589913) 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 7 ways as a sum of consecutive naturals, for example, 396781 + ... + 396910.

It is an arithmetic number, because the mean of its divisors is an integer number (8333766).

Almost surely, 2^51589915 is an apocalyptic number.

51589915 is a deficient number, since it is larger than the sum of its proper divisors (15080213).

51589915 is a wasteful number, since it uses less digits than its factorization.

51589915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793709.

The product of its digits is 81000, while the sum is 43.

The square root of 51589915 is about 7182.6119900771. The cubic root of 51589915 is about 372.2673411640.

The spelling of 51589915 in words is "fifty-one million, five hundred eighty-nine thousand, nine hundred fifteen".