82493221 has 8 divisors (see below), whose sum is σ = 84648960. Its totient is φ = 80348352.

The previous prime is 82493209. The next prime is 82493237. The reversal of 82493221 is 12239428.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82493221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82493921) 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, 13965 + ... + 18973.

It is an arithmetic number, because the mean of its divisors is an integer number (10581120).

Almost surely, 2^82493221 is an apocalyptic number.

It is an amenable number.

82493221 is a deficient number, since it is larger than the sum of its proper divisors (2155739).

82493221 is a wasteful number, since it uses less digits than its factorization.

82493221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5435.

The product of its digits is 6912, while the sum is 31.

The square root of 82493221 is about 9082.5778829581. The cubic root of 82493221 is about 435.3174606042.

The spelling of 82493221 in words is "eighty-two million, four hundred ninety-three thousand, two hundred twenty-one".