87591522 has 16 divisors (see below), whose sum is σ = 175286592. Its totient is φ = 29179920.

The previous prime is 87591499. The next prime is 87591529. The reversal of 87591522 is 22519578.

It is not an unprimeable number, because it can be changed into a prime (87591529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10708 + ... + 17024.

It is an arithmetic number, because the mean of its divisors is an integer number (10955412).

Almost surely, 2^87591522 is an apocalyptic number.

87591522 is an abundant number, since it is smaller than the sum of its proper divisors (87695070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87591522 is a wasteful number, since it uses less digits than its factorization.

87591522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8633.

The product of its digits is 50400, while the sum is 39.

The square root of 87591522 is about 9359.0342450490. The cubic root of 87591522 is about 444.1067331262.

The spelling of 87591522 in words is "eighty-seven million, five hundred ninety-one thousand, five hundred twenty-two".