10087181 has 4 divisors (see below), whose sum is σ = 10863132. Its totient is φ = 9311232.

The previous prime is 10087177. The next prime is 10087193. The reversal of 10087181 is 18178001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18178001 = 1123 ⋅16187.

It can be written as a sum of positive squares in 2 ways, for example, as 532900 + 9554281 = 730^2 + 3091^2 .

It is a cyclic number.

It is not a de Polignac number, because 10087181 - 2² = 10087177 is a prime.

It is a super-2 number, since 2×10087181² = 203502441053522, which contains 22 as substring.

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 10087181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10087481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387956 + ... + 387981.

It is an arithmetic number, because the mean of its divisors is an integer number (2715783).

Almost surely, 2^10087181 is an apocalyptic number.

It is an amenable number.

10087181 is a deficient number, since it is larger than the sum of its proper divisors (775951).

10087181 is an equidigital number, since it uses as much as digits as its factorization.

10087181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775950.

The product of its (nonzero) digits is 448, while the sum is 26.

The square root of 10087181 is about 3176.0322731358. The cubic root of 10087181 is about 216.0677442404.

The spelling of 10087181 in words is "ten million, eighty-seven thousand, one hundred eighty-one".