82815475 has 12 divisors (see below), whose sum is σ = 103636720. Its totient is φ = 65642400.

The previous prime is 82815461. The next prime is 82815487. The reversal of 82815475 is 57451828.

It is not a de Polignac number, because 82815475 - 2⁵ = 82815443 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12471 + ... + 17920.

Almost surely, 2^82815475 is an apocalyptic number.

82815475 is a deficient number, since it is larger than the sum of its proper divisors (20821245).

82815475 is a wasteful number, since it uses less digits than its factorization.

82815475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30510 (or 30505 counting only the distinct ones).

The product of its digits is 89600, while the sum is 40.

The square root of 82815475 is about 9100.3008192037. The cubic root of 82815475 is about 435.8835698285.

The spelling of 82815475 in words is "eighty-two million, eight hundred fifteen thousand, four hundred seventy-five".