87981141 has 16 divisors (see below), whose sum is σ = 124139520. Its totient is φ = 55310640.

The previous prime is 87981119. The next prime is 87981143. The reversal of 87981141 is 14118978.

It is not a de Polignac number, because 87981141 - 2⁵ = 87981109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87981141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87981143) 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, 4081 + ... + 13878.

It is an arithmetic number, because the mean of its divisors is an integer number (7758720).

Almost surely, 2^87981141 is an apocalyptic number.

It is an amenable number.

87981141 is a deficient number, since it is larger than the sum of its proper divisors (36158379).

87981141 is a wasteful number, since it uses less digits than its factorization.

87981141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18056.

The product of its digits is 16128, while the sum is 39.

The square root of 87981141 is about 9379.8262777090. The cubic root of 87981141 is about 444.7642415707.

The spelling of 87981141 in words is "eighty-seven million, nine hundred eighty-one thousand, one hundred forty-one".