87156522 has 24 divisors (see below), whose sum is σ = 197050464. Its totient is φ = 27788904.

The previous prime is 87156491. The next prime is 87156533. The reversal of 87156522 is 22565178.

It is a happy number.

87156522 is a `hidden beast` number, since 8 + 71 + 565 + 22 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104848 + ... + 105675.

It is an arithmetic number, because the mean of its divisors is an integer number (8210436).

Almost surely, 2^87156522 is an apocalyptic number.

87156522 is an abundant number, since it is smaller than the sum of its proper divisors (109893942).

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

87156522 is a wasteful number, since it uses less digits than its factorization.

87156522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210554 (or 210551 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 87156522 is about 9335.7657425623. The cubic root of 87156522 is about 443.3703334048.

It can be divided in two parts, 87156 and 522, that added together give a palindrome (87678).

The spelling of 87156522 in words is "eighty-seven million, one hundred fifty-six thousand, five hundred twenty-two".