22633261 has 4 divisors (see below), whose sum is σ = 25866592. Its totient is φ = 19399932.

The previous prime is 22633241. The next prime is 22633283. The reversal of 22633261 is 16233622.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 22633261 - 2¹⁷ = 22502189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22633211) 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, 1616655 + ... + 1616668.

It is an arithmetic number, because the mean of its divisors is an integer number (6466648).

Almost surely, 2^22633261 is an apocalyptic number.

It is an amenable number.

22633261 is a deficient number, since it is larger than the sum of its proper divisors (3233331).

22633261 is an equidigital number, since it uses as much as digits as its factorization.

22633261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233330.

The product of its digits is 2592, while the sum is 25.

The square root of 22633261 is about 4757.4426953984. The cubic root of 22633261 is about 282.8670603871.

Adding to 22633261 its reverse (16233622), we get a palindrome (38866883).

The spelling of 22633261 in words is "twenty-two million, six hundred thirty-three thousand, two hundred sixty-one".