87157 has 4 divisors (see below), whose sum is σ = 99616. Its totient is φ = 74700.

The previous prime is 87151. The next prime is 87179. The reversal of 87157 is 75178.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75178 = 2 ⋅37589.

It is a cyclic number.

It is not a de Polignac number, because 87157 - 2³ = 87149 is a prime.

It is a Duffinian number.

It is a congruent 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, 6219 + ... + 6232.

It is an arithmetic number, because the mean of its divisors is an integer number (24904).

2⁸⁷¹⁵⁷ is an apocalyptic number.

It is an amenable number.

87157 is a deficient number, since it is larger than the sum of its proper divisors (12459).

87157 is a wasteful number, since it uses less digits than its factorization.

87157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12458.

The product of its digits is 1960, while the sum is 28.

The square root of 87157 is about 295.2236440396. The cubic root of 87157 is about 44.3371143941.

The spelling of 87157 in words is "eighty-seven thousand, one hundred fifty-seven".