87255188 has 12 divisors (see below), whose sum is σ = 152802132. Its totient is φ = 43597440.

The previous prime is 87255187. The next prime is 87255191. The reversal of 87255188 is 88155278.

It can be written as a sum of positive squares in 2 ways, for example, as 81504784 + 5750404 = 9028^2 + 2398^2 .

It is a super-2 number, since 2×87255188² = 15226935665830688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87255187) 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, 245 + ... + 13212.

It is an arithmetic number, because the mean of its divisors is an integer number (12733511).

Almost surely, 2^87255188 is an apocalyptic number.

It is an amenable number.

87255188 is a deficient number, since it is larger than the sum of its proper divisors (65546944).

87255188 is a wasteful number, since it uses less digits than its factorization.

87255188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15082 (or 15080 counting only the distinct ones).

The product of its digits is 179200, while the sum is 44.

The square root of 87255188 is about 9341.0485492797. The cubic root of 87255188 is about 443.5375768851.

The spelling of 87255188 in words is "eighty-seven million, two hundred fifty-five thousand, one hundred eighty-eight".