87586157 has 4 divisors (see below), whose sum is σ = 89238780. Its totient is φ = 85933536.

The previous prime is 87586151. The next prime is 87586171. The reversal of 87586157 is 75168578.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75168578 = 2 ⋅37584289.

It can be written as a sum of positive squares in 2 ways, for example, as 42172036 + 45414121 = 6494^2 + 6739^2 .

It is a cyclic number.

It is not a de Polignac number, because 87586157 - 2¹⁶ = 87520621 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 (87586151) 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, 826232 + ... + 826337.

It is an arithmetic number, because the mean of its divisors is an integer number (22309695).

Almost surely, 2^87586157 is an apocalyptic number.

It is an amenable number.

87586157 is a deficient number, since it is larger than the sum of its proper divisors (1652623).

87586157 is a wasteful number, since it uses less digits than its factorization.

87586157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652622.

The product of its digits is 470400, while the sum is 47.

The square root of 87586157 is about 9358.7476192063. The cubic root of 87586157 is about 444.0976657293.

The spelling of 87586157 in words is "eighty-seven million, five hundred eighty-six thousand, one hundred fifty-seven".