5817252491221 has 8 divisors (see below), whose sum is σ = 6190395796800. Its totient is φ = 5447548294848.

The previous prime is 5817252491131. The next prime is 5817252491261. The reversal of 5817252491221 is 1221942527185.

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

It is not a de Polignac number, because 5817252491221 - 2²¹ = 5817250394069 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 (5817252491261) 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, 859773811 + ... + 859780576.

It is an arithmetic number, because the mean of its divisors is an integer number (773799474600).

Almost surely, 2^{5817252491221} is an apocalyptic number.

It is an amenable number.

5817252491221 is a deficient number, since it is larger than the sum of its proper divisors (373143305579).

5817252491221 is a wasteful number, since it uses less digits than its factorization.

5817252491221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719554603.

The product of its digits is 806400, while the sum is 49.

The spelling of 5817252491221 in words is "five trillion, eight hundred seventeen billion, two hundred fifty-two million, four hundred ninety-one thousand, two hundred twenty-one".