22655231 has 4 divisors (see below), whose sum is σ = 22701864. Its totient is φ = 22608600.

The previous prime is 22655219. The next prime is 22655249. The reversal of 22655231 is 13255622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13255622 = 2 ⋅6627811.

It is a cyclic number.

It is not a de Polignac number, because 22655231 - 2⁶ = 22655167 is a prime.

It is a super-2 number, since 2×22655231² = 1026518983326722, 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 22655231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22655531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22580 + ... + 23561.

It is an arithmetic number, because the mean of its divisors is an integer number (5675466).

Almost surely, 2^22655231 is an apocalyptic number.

22655231 is a deficient number, since it is larger than the sum of its proper divisors (46633).

22655231 is an equidigital number, since it uses as much as digits as its factorization.

22655231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46632.

The product of its digits is 3600, while the sum is 26.

The square root of 22655231 is about 4759.7511489573. The cubic root of 22655231 is about 282.9585566968.

The spelling of 22655231 in words is "twenty-two million, six hundred fifty-five thousand, two hundred thirty-one".