87155 has 4 divisors (see below), whose sum is σ = 104592. Its totient is φ = 69720.

The previous prime is 87151. The next prime is 87179. The reversal of 87155 is 55178.

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

It is not a de Polignac number, because 87155 - 2² = 87151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87151) 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, 8711 + ... + 8720.

It is an arithmetic number, because the mean of its divisors is an integer number (26148).

2⁸⁷¹⁵⁵ is an apocalyptic number.

87155 is a deficient number, since it is larger than the sum of its proper divisors (17437).

87155 is a wasteful number, since it uses less digits than its factorization.

87155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17436.

The product of its digits is 1400, while the sum is 26.

The square root of 87155 is about 295.2202567576. The cubic root of 87155 is about 44.3367752555.

It can be divided in two parts, 87 and 155, that added together give a palindrome (242).

The spelling of 87155 in words is "eighty-seven thousand, one hundred fifty-five".