82588921 has 4 divisors (see below), whose sum is σ = 84821092. Its totient is φ = 80356752.

The previous prime is 82588879. The next prime is 82588951. The reversal of 82588921 is 12988528.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61795321 + 20793600 = 7861^2 + 4560^2 .

It is a cyclic number.

It is not a de Polignac number, because 82588921 - 2¹⁵ = 82556153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82588951) 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, 1116030 + ... + 1116103.

It is an arithmetic number, because the mean of its divisors is an integer number (21205273).

Almost surely, 2^82588921 is an apocalyptic number.

It is an amenable number.

82588921 is a deficient number, since it is larger than the sum of its proper divisors (2232171).

82588921 is a wasteful number, since it uses less digits than its factorization.

82588921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232170.

The product of its digits is 92160, while the sum is 43.

The square root of 82588921 is about 9087.8446839721. The cubic root of 82588921 is about 435.4857321342.

The spelling of 82588921 in words is "eighty-two million, five hundred eighty-eight thousand, nine hundred twenty-one".