87512141 has 12 divisors (see below), whose sum is σ = 95420052. Its totient is φ = 79923456.

The previous prime is 87512083. The next prime is 87512143. The reversal of 87512141 is 14121578.

It can be written as a sum of positive squares in 6 ways, for example, as 14478025 + 73034116 = 3805^2 + 8546^2 .

It is not a de Polignac number, because 87512141 - 2⁶ = 87512077 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 (87512143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234431 + ... + 234803.

It is an arithmetic number, because the mean of its divisors is an integer number (7951671).

Almost surely, 2^87512141 is an apocalyptic number.

It is an amenable number.

87512141 is a deficient number, since it is larger than the sum of its proper divisors (7907911).

87512141 is an equidigital number, since it uses as much as digits as its factorization.

87512141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 427 counting only the distinct ones).

The product of its digits is 2240, while the sum is 29.

The square root of 87512141 is about 9354.7924081724. The cubic root of 87512141 is about 443.9725333359.

The spelling of 87512141 in words is "eighty-seven million, five hundred twelve thousand, one hundred forty-one".