87371557 has 24 divisors (see below), whose sum is σ = 115231200. Its totient is φ = 65481696.

The previous prime is 87371491. The next prime is 87371563. The reversal of 87371557 is 75517378.

It is not a de Polignac number, because 87371557 - 2⁷ = 87371429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87371357) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8494 + ... + 15712.

It is an arithmetic number, because the mean of its divisors is an integer number (4801300).

Almost surely, 2^87371557 is an apocalyptic number.

It is an amenable number.

87371557 is a deficient number, since it is larger than the sum of its proper divisors (27859643).

87371557 is a wasteful number, since it uses less digits than its factorization.

87371557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7265 (or 7258 counting only the distinct ones).

The product of its digits is 205800, while the sum is 43.

The square root of 87371557 is about 9347.2753784191. The cubic root of 87371557 is about 443.7346658194.

The spelling of 87371557 in words is "eighty-seven million, three hundred seventy-one thousand, five hundred fifty-seven".