82475915 has 4 divisors (see below), whose sum is σ = 98971104. Its totient is φ = 65980728.

The previous prime is 82475909. The next prime is 82475933. The reversal of 82475915 is 51957428.

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 82475915 - 2¹⁰ = 82474891 is a prime.

It is a Duffinian 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, 8247587 + ... + 8247596.

It is an arithmetic number, because the mean of its divisors is an integer number (24742776).

Almost surely, 2^82475915 is an apocalyptic number.

82475915 is a deficient number, since it is larger than the sum of its proper divisors (16495189).

82475915 is a wasteful number, since it uses less digits than its factorization.

82475915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16495188.

The product of its digits is 100800, while the sum is 41.

The square root of 82475915 is about 9081.6251298983. The cubic root of 82475915 is about 435.2870171699.

The spelling of 82475915 in words is "eighty-two million, four hundred seventy-five thousand, nine hundred fifteen".