87555552 has 96 divisors (see below), whose sum is σ = 268128000. Its totient is φ = 25006464.

The previous prime is 87555547. The next prime is 87555569. The reversal of 87555552 is 25555578.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

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, 31599 + ... + 34257.

It is an arithmetic number, because the mean of its divisors is an integer number (2793000).

Almost surely, 2^87555552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87555552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134064000).

87555552 is an abundant number, since it is smaller than the sum of its proper divisors (180572448).

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

87555552 is a wasteful number, since it uses less digits than its factorization.

87555552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693 (or 2671 counting only the distinct ones).

The product of its digits is 350000, while the sum is 42.

The square root of 87555552 is about 9357.1123750867. The cubic root of 87555552 is about 444.0459330776.

The spelling of 87555552 in words is "eighty-seven million, five hundred fifty-five thousand, five hundred fifty-two".