81083252 has 12 divisors (see below), whose sum is σ = 142014180. Its totient is φ = 40507776.

The previous prime is 81083239. The next prime is 81083273. The reversal of 81083252 is 25238018.

It can be written as a sum of positive squares in 2 ways, for example, as 80928016 + 155236 = 8996^2 + 394^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2627 + ... + 13002.

It is an arithmetic number, because the mean of its divisors is an integer number (11834515).

Almost surely, 2^81083252 is an apocalyptic number.

It is an amenable number.

81083252 is a deficient number, since it is larger than the sum of its proper divisors (60930928).

81083252 is a wasteful number, since it uses less digits than its factorization.

81083252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16930 (or 16928 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 81083252 is about 9004.6239232963. The cubic root of 81083252 is about 432.8230551028.

The spelling of 81083252 in words is "eighty-one million, eighty-three thousand, two hundred fifty-two".