82572166 has 4 divisors (see below), whose sum is σ = 123858252. Its totient is φ = 41286082.

The previous prime is 82572137. The next prime is 82572167. The reversal of 82572166 is 66127528.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82572167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20643040 + ... + 20643043.

It is an arithmetic number, because the mean of its divisors is an integer number (30964563).

Almost surely, 2^82572166 is an apocalyptic number.

82572166 is a deficient number, since it is larger than the sum of its proper divisors (41286086).

82572166 is a wasteful number, since it uses less digits than its factorization.

82572166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41286085.

The product of its digits is 40320, while the sum is 37.

The square root of 82572166 is about 9086.9228014769. The cubic root of 82572166 is about 435.4562808195.

The spelling of 82572166 in words is "eighty-two million, five hundred seventy-two thousand, one hundred sixty-six".