82111252 has 24 divisors (see below), whose sum is σ = 147470400. Its totient is φ = 39982656.

The previous prime is 82111231. The next prime is 82111259. The reversal of 82111252 is 25211128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82111259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97449 + ... + 98287.

It is an arithmetic number, because the mean of its divisors is an integer number (6144600).

Almost surely, 2^82111252 is an apocalyptic number.

It is an amenable number.

82111252 is a deficient number, since it is larger than the sum of its proper divisors (65359148).

82111252 is a wasteful number, since it uses less digits than its factorization.

82111252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455 (or 1453 counting only the distinct ones).

The product of its digits is 320, while the sum is 22.

The square root of 82111252 is about 9061.5259200645. The cubic root of 82111252 is about 434.6445363146.

The spelling of 82111252 in words is "eighty-two million, one hundred eleven thousand, two hundred fifty-two".