10555581 has 16 divisors (see below), whose sum is σ = 14404544. Its totient is φ = 6873984.

The previous prime is 10555579. The next prime is 10555609. The reversal of 10555581 is 18555501.

It is not a de Polignac number, because 10555581 - 2¹ = 10555579 is a prime.

It is a super-2 number, since 2×10555581² = 222840580495122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10555561) 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, 34230 + ... + 34536.

It is an arithmetic number, because the mean of its divisors is an integer number (900284).

Almost surely, 2^10555581 is an apocalyptic number.

It is an amenable number.

10555581 is a deficient number, since it is larger than the sum of its proper divisors (3848963).

10555581 is a wasteful number, since it uses less digits than its factorization.

10555581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540.

The product of its (nonzero) digits is 5000, while the sum is 30.

The square root of 10555581 is about 3248.9353640847. The cubic root of 10555581 is about 219.3616551001.

The spelling of 10555581 in words is "ten million, five hundred fifty-five thousand, five hundred eighty-one".