87886551 has 4 divisors (see below), whose sum is σ = 117182072. Its totient is φ = 58591032.

The previous prime is 87886537. The next prime is 87886553. The reversal of 87886551 is 15568878.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87886551 - 2¹³ = 87878359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87886551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87886553) 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, 14647756 + ... + 14647761.

It is an arithmetic number, because the mean of its divisors is an integer number (29295518).

Almost surely, 2^87886551 is an apocalyptic number.

87886551 is a deficient number, since it is larger than the sum of its proper divisors (29295521).

87886551 is a wasteful number, since it uses less digits than its factorization.

87886551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29295520.

The product of its digits is 537600, while the sum is 48.

The square root of 87886551 is about 9374.7827174820. The cubic root of 87886551 is about 444.6047932504.

The spelling of 87886551 in words is "eighty-seven million, eight hundred eighty-six thousand, five hundred fifty-one".