22555281 has 8 divisors (see below), whose sum is σ = 34369984. Its totient is φ = 12888720.

The previous prime is 22555271. The next prime is 22555283. The reversal of 22555281 is 18255522.

22555281 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22555281 - 2⁶ = 22555217 is a prime.

It is a super-2 number, since 2×22555281² = 1017481401977922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22555283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537010 + ... + 537051.

It is an arithmetic number, because the mean of its divisors is an integer number (4296248).

Almost surely, 2^22555281 is an apocalyptic number.

22555281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22555281 is a deficient number, since it is larger than the sum of its proper divisors (11814703).

22555281 is a wasteful number, since it uses less digits than its factorization.

22555281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074071.

The product of its digits is 8000, while the sum is 30.

The square root of 22555281 is about 4749.2400444703. The cubic root of 22555281 is about 282.5418258483.

The spelling of 22555281 in words is "twenty-two million, five hundred fifty-five thousand, two hundred eighty-one".