82522981 has 8 divisors (see below), whose sum is σ = 87525144. Its totient is φ = 77537280.

The previous prime is 82522969. The next prime is 82522997. The reversal of 82522981 is 18922528.

It can be written as a sum of positive squares in 4 ways, for example, as 68392900 + 14130081 = 8270^2 + 3759^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82522981 - 2¹⁷ = 82391909 is a prime.

It is a super-2 number, since 2×82522981² = 13620084786252722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82522981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82522901) 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, 7111 + ... + 14683.

It is an arithmetic number, because the mean of its divisors is an integer number (10940643).

Almost surely, 2^82522981 is an apocalyptic number.

It is an amenable number.

82522981 is a deficient number, since it is larger than the sum of its proper divisors (5002163).

82522981 is a wasteful number, since it uses less digits than its factorization.

82522981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8231.

The product of its digits is 23040, while the sum is 37.

The square root of 82522981 is about 9084.2160366209. The cubic root of 82522981 is about 435.3698022387.

The spelling of 82522981 in words is "eighty-two million, five hundred twenty-two thousand, nine hundred eighty-one".