82459221 has 32 divisors (see below), whose sum is σ = 125408640. Its totient is φ = 47775744.

The previous prime is 82459219. The next prime is 82459243. The reversal of 82459221 is 12295428.

It is not a de Polignac number, because 82459221 - 2¹ = 82459219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82459211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190221 + ... + 190653.

It is an arithmetic number, because the mean of its divisors is an integer number (3919020).

Almost surely, 2^82459221 is an apocalyptic number.

It is an amenable number.

82459221 is a deficient number, since it is larger than the sum of its proper divisors (42949419).

82459221 is a wasteful number, since it uses less digits than its factorization.

82459221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725.

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

The square root of 82459221 is about 9080.7059747577. The cubic root of 82459221 is about 435.2576462851.

The spelling of 82459221 in words is "eighty-two million, four hundred fifty-nine thousand, two hundred twenty-one".