87517522 has 8 divisors (see below), whose sum is σ = 133753356. Its totient is φ = 42933072.

The previous prime is 87517501. The next prime is 87517523. The reversal of 87517522 is 22571578.

It can be written as a sum of positive squares in 2 ways, for example, as 81162081 + 6355441 = 9009^2 + 2521^2 .

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

It is not an unprimeable number, because it can be changed into a prime (87517523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412713 + ... + 412924.

Almost surely, 2^87517522 is an apocalyptic number.

87517522 is a deficient number, since it is larger than the sum of its proper divisors (46235834).

87517522 is a wasteful number, since it uses less digits than its factorization.

87517522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825692.

The product of its digits is 39200, while the sum is 37.

The square root of 87517522 is about 9355.0800103473. The cubic root of 87517522 is about 443.9816329009.

The spelling of 87517522 in words is "eighty-seven million, five hundred seventeen thousand, five hundred twenty-two".