82337221 has 2 divisors, whose sum is σ = 82337222. Its totient is φ = 82337220.

The previous prime is 82337207. The next prime is 82337261. The reversal of 82337221 is 12273328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75446596 + 6890625 = 8686^2 + 2625^2 .

It is a cyclic number.

It is not a de Polignac number, because 82337221 - 2¹⁹ = 81812933 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82337221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82337261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41168610 + 41168611.

It is an arithmetic number, because the mean of its divisors is an integer number (41168611).

Almost surely, 2^82337221 is an apocalyptic number.

It is an amenable number.

82337221 is a deficient number, since it is larger than the sum of its proper divisors (1).

82337221 is an equidigital number, since it uses as much as digits as its factorization.

82337221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 82337221 is about 9073.9859488540. The cubic root of 82337221 is about 435.0428829878.

The spelling of 82337221 in words is "eighty-two million, three hundred thirty-seven thousand, two hundred twenty-one".