22613261 has 4 divisors (see below), whose sum is σ = 24669024. Its totient is φ = 20557500.

The previous prime is 22613203. The next prime is 22613299. The reversal of 22613261 is 16231622.

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 22613261 - 2¹⁴ = 22596877 is a prime.

It is a super-2 number, since 2×22613261² = 1022719146108242, 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 (22613161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1027865 + ... + 1027886.

It is an arithmetic number, because the mean of its divisors is an integer number (6167256).

Almost surely, 2^22613261 is an apocalyptic number.

It is an amenable number.

22613261 is a deficient number, since it is larger than the sum of its proper divisors (2055763).

22613261 is a wasteful number, since it uses less digits than its factorization.

22613261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055762.

The product of its digits is 864, while the sum is 23.

The square root of 22613261 is about 4755.3402612221. The cubic root of 22613261 is about 282.7837168452.

Adding to 22613261 its reverse (16231622), we get a palindrome (38844883).

The spelling of 22613261 in words is "twenty-two million, six hundred thirteen thousand, two hundred sixty-one".