82515187 has 2 divisors, whose sum is σ = 82515188. Its totient is φ = 82515186.

The previous prime is 82515163. The next prime is 82515299. The reversal of 82515187 is 78151528.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82515187 - 2¹¹ = 82513139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82515107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41257593 + 41257594.

It is an arithmetic number, because the mean of its divisors is an integer number (41257594).

Almost surely, 2^82515187 is an apocalyptic number.

82515187 is a deficient number, since it is larger than the sum of its proper divisors (1).

82515187 is an equidigital number, since it uses as much as digits as its factorization.

82515187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 37.

The square root of 82515187 is about 9083.7870406566. The cubic root of 82515187 is about 435.3560954343.

The spelling of 82515187 in words is "eighty-two million, five hundred fifteen thousand, one hundred eighty-seven".