87522861 has 16 divisors (see below), whose sum is σ = 119510208. Its totient is φ = 56956800.

The previous prime is 87522829. The next prime is 87522881. The reversal of 87522861 is 16822578.

It is not a de Polignac number, because 87522861 - 2⁵ = 87522829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87522811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23326 + ... + 26816.

It is an arithmetic number, because the mean of its divisors is an integer number (7469388).

Almost surely, 2^87522861 is an apocalyptic number.

It is an amenable number.

87522861 is a deficient number, since it is larger than the sum of its proper divisors (31987347).

87522861 is a wasteful number, since it uses less digits than its factorization.

87522861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3692.

The product of its digits is 53760, while the sum is 39.

The square root of 87522861 is about 9355.3653589798. The cubic root of 87522861 is about 443.9906610729.

The spelling of 87522861 in words is "eighty-seven million, five hundred twenty-two thousand, eight hundred sixty-one".