82872485 has 4 divisors (see below), whose sum is σ = 99446988. Its totient is φ = 66297984.

The previous prime is 82872469. The next prime is 82872497. The reversal of 82872485 is 58427828.

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 51523684 + 31348801 = 7178^2 + 5599^2 .

It is a cyclic number.

It is not a de Polignac number, because 82872485 - 2⁴ = 82872469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8287244 + ... + 8287253.

It is an arithmetic number, because the mean of its divisors is an integer number (24861747).

Almost surely, 2^82872485 is an apocalyptic number.

It is an amenable number.

82872485 is a deficient number, since it is larger than the sum of its proper divisors (16574503).

82872485 is a wasteful number, since it uses less digits than its factorization.

82872485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16574502.

The product of its digits is 286720, while the sum is 44.

The square root of 82872485 is about 9103.4325943569. The cubic root of 82872485 is about 435.9835673323.

The spelling of 82872485 in words is "eighty-two million, eight hundred seventy-two thousand, four hundred eighty-five".