82498221 has 12 divisors (see below), whose sum is σ = 128330748. Its totient is φ = 50768064.

The previous prime is 82498219. The next prime is 82498231. The reversal of 82498221 is 12289428.

It can be written as a sum of positive squares in 2 ways, for example, as 24890121 + 57608100 = 4989^2 + 7590^2 .

It is not a de Polignac number, because 82498221 - 2¹ = 82498219 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 (82498201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352440 + ... + 352673.

It is an arithmetic number, because the mean of its divisors is an integer number (10694229).

Almost surely, 2^82498221 is an apocalyptic number.

It is an amenable number.

82498221 is a deficient number, since it is larger than the sum of its proper divisors (45832527).

82498221 is a wasteful number, since it uses less digits than its factorization.

82498221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705132 (or 705129 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 82498221 is about 9082.8531310376. The cubic root of 82498221 is about 435.3262554413.

The spelling of 82498221 in words is "eighty-two million, four hundred ninety-eight thousand, two hundred twenty-one".