87087157 has 8 divisors (see below), whose sum is σ = 89391960. Its totient is φ = 84791040.

The previous prime is 87087139. The next prime is 87087163. The reversal of 87087157 is 75178078.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 206116 + 86881041 = 454^2 + 9321^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87087157 - 2²³ = 78698549 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 (87087137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21463 + ... + 25195.

It is an arithmetic number, because the mean of its divisors is an integer number (11173995).

Almost surely, 2^87087157 is an apocalyptic number.

It is an amenable number.

87087157 is a deficient number, since it is larger than the sum of its proper divisors (2304803).

87087157 is a wasteful number, since it uses less digits than its factorization.

87087157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4343.

The product of its (nonzero) digits is 109760, while the sum is 43.

The square root of 87087157 is about 9332.0499891503. The cubic root of 87087157 is about 443.2526809145.

The spelling of 87087157 in words is "eighty-seven million, eighty-seven thousand, one hundred fifty-seven".