87592572221 has 8 divisors (see below), whose sum is σ = 109206323904. Its totient is φ = 68253952320.

The previous prime is 87592572191. The next prime is 87592572251. The reversal of 87592572221 is 12227529578.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87592572191) and next prime (87592572251).

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-87592572221 is a prime.

It is a super-2 number, since 2×87592572221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87592572221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87592572251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568782860 + ... + 568783013.

It is an arithmetic number, because the mean of its divisors is an integer number (13650790488).

Almost surely, 2^87592572221 is an apocalyptic number.

It is an amenable number.

87592572221 is a deficient number, since it is larger than the sum of its proper divisors (21613751683).

87592572221 is a wasteful number, since it uses less digits than its factorization.

87592572221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137565891.

The product of its digits is 1411200, while the sum is 50.

The spelling of 87592572221 in words is "eighty-seven billion, five hundred ninety-two million, five hundred seventy-two thousand, two hundred twenty-one".