82539057 has 4 divisors (see below), whose sum is σ = 110052080. Its totient is φ = 55026036.

The previous prime is 82539049. The next prime is 82539071. The reversal of 82539057 is 75093528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 82539057 - 2³ = 82539049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82534057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13756507 + ... + 13756512.

It is an arithmetic number, because the mean of its divisors is an integer number (27513020).

Almost surely, 2^82539057 is an apocalyptic number.

It is an amenable number.

82539057 is a deficient number, since it is larger than the sum of its proper divisors (27513023).

82539057 is a wasteful number, since it uses less digits than its factorization.

82539057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27513022.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 82539057 is about 9085.1008249771. The cubic root of 82539057 is about 435.3980713359.

The spelling of 82539057 in words is "eighty-two million, five hundred thirty-nine thousand, fifty-seven".