22258261 has 4 divisors (see below), whose sum is σ = 22391712. Its totient is φ = 22124812.

The previous prime is 22258237. The next prime is 22258297. The reversal of 22258261 is 16285222.

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 22258261 - 2⁹ = 22257749 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 (22252261) 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, 66475 + ... + 66808.

It is an arithmetic number, because the mean of its divisors is an integer number (5597928).

Almost surely, 2^22258261 is an apocalyptic number.

It is an amenable number.

22258261 is a deficient number, since it is larger than the sum of its proper divisors (133451).

22258261 is a wasteful number, since it uses less digits than its factorization.

22258261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133450.

The product of its digits is 3840, while the sum is 28.

The square root of 22258261 is about 4717.8661490127. The cubic root of 22258261 is about 281.2961210948.

The spelling of 22258261 in words is "twenty-two million, two hundred fifty-eight thousand, two hundred sixty-one".