87155284 has 12 divisors (see below), whose sum is σ = 154611604. Its totient is φ = 42980544.

The previous prime is 87155221. The next prime is 87155287. The reversal of 87155284 is 48255178.

It can be written as a sum of positive squares in 2 ways, for example, as 74338884 + 12816400 = 8622^2 + 3580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87155287) 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, 148947 + ... + 149530.

Almost surely, 2^87155284 is an apocalyptic number.

It is an amenable number.

87155284 is a deficient number, since it is larger than the sum of its proper divisors (67456320).

87155284 is a wasteful number, since it uses less digits than its factorization.

87155284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298554 (or 298552 counting only the distinct ones).

The product of its digits is 89600, while the sum is 40.

The square root of 87155284 is about 9335.6994381782. The cubic root of 87155284 is about 443.3682341353.

The spelling of 87155284 in words is "eighty-seven million, one hundred fifty-five thousand, two hundred eighty-four".