22861081 has 4 divisors (see below), whose sum is σ = 22872064. Its totient is φ = 22850100.

The previous prime is 22861063. The next prime is 22861093. The reversal of 22861081 is 18016822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22861081 - 2⁹ = 22860569 is a prime.

It is a super-2 number, since 2×22861081² = 1045258048977122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22861001) 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, 1305 + ... + 6886.

It is an arithmetic number, because the mean of its divisors is an integer number (5718016).

Almost surely, 2^22861081 is an apocalyptic number.

22861081 is the 2761-st hex number.

It is an amenable number.

22861081 is a deficient number, since it is larger than the sum of its proper divisors (10983).

22861081 is an equidigital number, since it uses as much as digits as its factorization.

22861081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10982.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 22861081 is about 4781.3262804373. The cubic root of 22861081 is about 283.8129802563.

The spelling of 22861081 in words is "twenty-two million, eight hundred sixty-one thousand, eighty-one".