82156475 has 24 divisors (see below), whose sum is σ = 107813040. Its totient is φ = 61931520.

The previous prime is 82156469. The next prime is 82156493. The reversal of 82156475 is 57465128.

It is not a de Polignac number, because 82156475 - 2¹⁸ = 81894331 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121739 + ... + 122411.

It is an arithmetic number, because the mean of its divisors is an integer number (4492210).

Almost surely, 2^82156475 is an apocalyptic number.

82156475 is a deficient number, since it is larger than the sum of its proper divisors (25656565).

82156475 is a wasteful number, since it uses less digits than its factorization.

82156475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959 (or 954 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 82156475 is about 9064.0209068603. The cubic root of 82156475 is about 434.7243155652.

The spelling of 82156475 in words is "eighty-two million, one hundred fifty-six thousand, four hundred seventy-five".