81882522 has 16 divisors (see below), whose sum is σ = 181961280. Its totient is φ = 27294156.

The previous prime is 81882511. The next prime is 81882527. The reversal of 81882522 is 22528818.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (81882527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758118 + ... + 758225.

It is an arithmetic number, because the mean of its divisors is an integer number (11372580).

Almost surely, 2^81882522 is an apocalyptic number.

81882522 is an abundant number, since it is smaller than the sum of its proper divisors (100078758).

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

81882522 is a wasteful number, since it uses less digits than its factorization.

81882522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516354 (or 1516348 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 81882522 is about 9048.8961757775. The cubic root of 81882522 is about 434.2405774695.

The spelling of 81882522 in words is "eighty-one million, eight hundred eighty-two thousand, five hundred twenty-two".