22354261 has 2 divisors, whose sum is σ = 22354262. Its totient is φ = 22354260.

The previous prime is 22354259. The next prime is 22354291. The reversal of 22354261 is 16245322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15563025 + 6791236 = 3945^2 + 2606^2 .

It is a cyclic number.

It is not a de Polignac number, because 22354261 - 2¹ = 22354259 is a prime.

It is a super-2 number, since 2×22354261² = 999425969712242, which contains 22 as substring.

Together with 22354259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22354231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11177130 + 11177131.

It is an arithmetic number, because the mean of its divisors is an integer number (11177131).

Almost surely, 2^22354261 is an apocalyptic number.

It is an amenable number.

22354261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22354261 is an equidigital number, since it uses as much as digits as its factorization.

22354261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 22354261 is about 4728.0292934795. The cubic root of 22354261 is about 281.6999516392.

Adding to 22354261 its reverse (16245322), we get a palindrome (38599583).

The spelling of 22354261 in words is "twenty-two million, three hundred fifty-four thousand, two hundred sixty-one".