82521492 has 12 divisors (see below), whose sum is σ = 192550176. Its totient is φ = 27507160.

The previous prime is 82521487. The next prime is 82521529. The reversal of 82521492 is 29412528.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3438384 + ... + 3438407.

It is an arithmetic number, because the mean of its divisors is an integer number (16045848).

Almost surely, 2^82521492 is an apocalyptic number.

It is an amenable number.

82521492 is an abundant number, since it is smaller than the sum of its proper divisors (110028684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82521492 is a wasteful number, since it uses less digits than its factorization.

82521492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6876798 (or 6876796 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 82521492 is about 9084.1340809127. The cubic root of 82521492 is about 435.3671836973.

The spelling of 82521492 in words is "eighty-two million, five hundred twenty-one thousand, four hundred ninety-two".