82507915 has 12 divisors (see below), whose sum is σ = 115174656. Its totient is φ = 56576688.

The previous prime is 82507913. The next prime is 82507939. The reversal of 82507915 is 51970528.

It is not a de Polignac number, because 82507915 - 2¹ = 82507913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82507913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168139 + ... + 168628.

It is an arithmetic number, because the mean of its divisors is an integer number (9597888).

Almost surely, 2^82507915 is an apocalyptic number.

82507915 is a deficient number, since it is larger than the sum of its proper divisors (32666741).

82507915 is a wasteful number, since it uses less digits than its factorization.

82507915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336786 (or 336779 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 82507915 is about 9083.3867582527. The cubic root of 82507915 is about 435.3433058593.

The spelling of 82507915 in words is "eighty-two million, five hundred seven thousand, nine hundred fifteen".