87808141 has 4 divisors (see below), whose sum is σ = 90181372. Its totient is φ = 85434912.

The previous prime is 87808129. The next prime is 87808187. The reversal of 87808141 is 14180878.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81830116 + 5978025 = 9046^2 + 2445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87808141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 2373193 = 87808141 / (8 + 7 + 8 + 0 + 8 + 1 + 4 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87808141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87808241) 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, 1186560 + ... + 1186633.

It is an arithmetic number, because the mean of its divisors is an integer number (22545343).

Almost surely, 2^87808141 is an apocalyptic number.

It is an amenable number.

87808141 is a deficient number, since it is larger than the sum of its proper divisors (2373231).

87808141 is a wasteful number, since it uses less digits than its factorization.

87808141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373230.

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 87808141 is about 9370.5998207159. The cubic root of 87808141 is about 444.4725324587.

The spelling of 87808141 in words is "eighty-seven million, eight hundred eight thousand, one hundred forty-one".