82516015 has 4 divisors (see below), whose sum is σ = 99019224. Its totient is φ = 66012808.

The previous prime is 82516003. The next prime is 82516033. The reversal of 82516015 is 51061528.

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

It is a cyclic number.

It is not a de Polignac number, because 82516015 - 2⁷ = 82515887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8251597 + ... + 8251606.

It is an arithmetic number, because the mean of its divisors is an integer number (24754806).

Almost surely, 2^82516015 is an apocalyptic number.

82516015 is a deficient number, since it is larger than the sum of its proper divisors (16503209).

82516015 is a wasteful number, since it uses less digits than its factorization.

82516015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16503208.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 82516015 is about 9083.8326162474. The cubic root of 82516015 is about 435.3575516254.

The spelling of 82516015 in words is "eighty-two million, five hundred sixteen thousand, fifteen".