87130155 has 16 divisors (see below), whose sum is σ = 159323904. Its totient is φ = 39830880.

The previous prime is 87130139. The next prime is 87130157. The reversal of 87130155 is 55103178.

It is not a de Polignac number, because 87130155 - 2⁴ = 87130139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87130157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414801 + ... + 415010.

It is an arithmetic number, because the mean of its divisors is an integer number (9957744).

Almost surely, 2^87130155 is an apocalyptic number.

87130155 is a deficient number, since it is larger than the sum of its proper divisors (72193749).

87130155 is a wasteful number, since it uses less digits than its factorization.

87130155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829826.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 87130155 is about 9334.3534859143. The cubic root of 87130155 is about 443.3256187375.

The spelling of 87130155 in words is "eighty-seven million, one hundred thirty thousand, one hundred fifty-five".