87322555 has 4 divisors (see below), whose sum is σ = 104787072. Its totient is φ = 69858040.

The previous prime is 87322541. The next prime is 87322583. The reversal of 87322555 is 55522378.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55522378 = 2 ⋅27761189.

It is not a de Polignac number, because 87322555 - 2⁷ = 87322427 is a prime.

It is a super-3 number, since 3×87322555³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 8732251 + ... + 8732260.

It is an arithmetic number, because the mean of its divisors is an integer number (26196768).

Almost surely, 2^87322555 is an apocalyptic number.

87322555 is a deficient number, since it is larger than the sum of its proper divisors (17464517).

87322555 is a wasteful number, since it uses less digits than its factorization.

87322555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17464516.

The product of its digits is 84000, while the sum is 37.

The square root of 87322555 is about 9344.6538191631. The cubic root of 87322555 is about 443.6516946821.

The spelling of 87322555 in words is "eighty-seven million, three hundred twenty-two thousand, five hundred fifty-five".