82553815 has 8 divisors (see below), whose sum is σ = 100319040. Its totient is φ = 65206752.

The previous prime is 82553791. The next prime is 82553843. The reversal of 82553815 is 51835528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82553815 - 2⁷ = 82553687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104104 + ... + 104893.

It is an arithmetic number, because the mean of its divisors is an integer number (12539880).

Almost surely, 2^82553815 is an apocalyptic number.

82553815 is a deficient number, since it is larger than the sum of its proper divisors (17765225).

82553815 is a wasteful number, since it uses less digits than its factorization.

82553815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209081.

The product of its digits is 48000, while the sum is 37.

The square root of 82553815 is about 9085.9129976024. The cubic root of 82553815 is about 435.4240195437.

The spelling of 82553815 in words is "eighty-two million, five hundred fifty-three thousand, eight hundred fifteen".