10871581 has 12 divisors (see below), whose sum is σ = 12753408. Its totient is φ = 9239832.

The previous prime is 10871537. The next prime is 10871587. The reversal of 10871581 is 18517801.

It is not a de Polignac number, because 10871581 - 2⁷ = 10871453 is a prime.

It is a super-2 number, since 2×10871581² = 236382546879122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10871587) 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 11 ways as a sum of consecutive naturals, for example, 5350 + ... + 7096.

It is an arithmetic number, because the mean of its divisors is an integer number (1062784).

Almost surely, 2^10871581 is an apocalyptic number.

It is an amenable number.

10871581 is a deficient number, since it is larger than the sum of its proper divisors (1881827).

10871581 is a wasteful number, since it uses less digits than its factorization.

10871581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888 (or 1881 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 31.

The square root of 10871581 is about 3297.2080613756. The cubic root of 10871581 is about 221.5291606406.

The spelling of 10871581 in words is "ten million, eight hundred seventy-one thousand, five hundred eighty-one".