82555215 has 16 divisors (see below), whose sum is σ = 132384768. Its totient is φ = 43930656.

The previous prime is 82555159. The next prime is 82555223. The reversal of 82555215 is 51255528.

It is not a de Polignac number, because 82555215 - 2⁷ = 82555087 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1002 + ... + 12888.

It is an arithmetic number, because the mean of its divisors is an integer number (8274048).

Almost surely, 2^82555215 is an apocalyptic number.

82555215 is a deficient number, since it is larger than the sum of its proper divisors (49829553).

82555215 is a wasteful number, since it uses less digits than its factorization.

82555215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12358.

The product of its digits is 20000, while the sum is 33.

The square root of 82555215 is about 9085.9900396159. The cubic root of 82555215 is about 435.4264809287.

The spelling of 82555215 in words is "eighty-two million, five hundred fifty-five thousand, two hundred fifteen".