82521022 has 4 divisors (see below), whose sum is σ = 123781536. Its totient is φ = 41260510.

The previous prime is 82521013. The next prime is 82521029. The reversal of 82521022 is 22012528.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 82520984 and 82521002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82521029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20630254 + ... + 20630257.

It is an arithmetic number, because the mean of its divisors is an integer number (30945384).

Almost surely, 2^82521022 is an apocalyptic number.

82521022 is a deficient number, since it is larger than the sum of its proper divisors (41260514).

82521022 is a wasteful number, since it uses less digits than its factorization.

82521022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41260513.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 82521022 is about 9084.1082115968. The cubic root of 82521022 is about 435.3663571531.

The spelling of 82521022 in words is "eighty-two million, five hundred twenty-one thousand, twenty-two".