87555522 has 8 divisors (see below), whose sum is σ = 175111056. Its totient is φ = 29185172.

The previous prime is 87555521. The next prime is 87555527. The reversal of 87555522 is 22555578.

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

87555522 is an admirable number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (87555521) 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 3 ways as a sum of consecutive naturals, for example, 7296288 + ... + 7296299.

It is an arithmetic number, because the mean of its divisors is an integer number (21888882).

Almost surely, 2^87555522 is an apocalyptic number.

87555522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

87555522 is a wasteful number, since it uses less digits than its factorization.

87555522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14592592.

The product of its digits is 140000, while the sum is 39.

The square root of 87555522 is about 9357.1107720279. The cubic root of 87555522 is about 444.0458823617.

The spelling of 87555522 in words is "eighty-seven million, five hundred fifty-five thousand, five hundred twenty-two".