82571973 has 12 divisors (see below), whose sum is σ = 121015104. Its totient is φ = 50043400.

The previous prime is 82571963. The next prime is 82571987. The reversal of 82571973 is 37917528.

It is a de Polignac number, because none of the positive numbers 2^k-82571973 is a prime.

It is a super-2 number, since 2×82571973² = 13636261450225458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82571953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113373 + ... + 114098.

It is an arithmetic number, because the mean of its divisors is an integer number (10084592).

Almost surely, 2^82571973 is an apocalyptic number.

It is an amenable number.

82571973 is a deficient number, since it is larger than the sum of its proper divisors (38443131).

82571973 is a wasteful number, since it uses less digits than its factorization.

82571973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227496 (or 227485 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The square root of 82571973 is about 9086.9121818140. The cubic root of 82571973 is about 435.4559415481.

The spelling of 82571973 in words is "eighty-two million, five hundred seventy-one thousand, nine hundred seventy-three".