22236541 has 2 divisors, whose sum is σ = 22236542. Its totient is φ = 22236540.

The previous prime is 22236509. The next prime is 22236553. The reversal of 22236541 is 14563222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22184100 + 52441 = 4710^2 + 229^2 .

It is a cyclic number.

It is not a de Polignac number, because 22236541 - 2⁵ = 22236509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22236581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11118270 + 11118271.

It is an arithmetic number, because the mean of its divisors is an integer number (11118271).

Almost surely, 2^22236541 is an apocalyptic number.

It is an amenable number.

22236541 is a deficient number, since it is larger than the sum of its proper divisors (1).

22236541 is an equidigital number, since it uses as much as digits as its factorization.

22236541 is an odious number, because the sum of its binary digits is odd.

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

The square root of 22236541 is about 4715.5636990714. The cubic root of 22236541 is about 281.2045934269.

Adding to 22236541 its reverse (14563222), we get a palindrome (36799763).

It can be divided in two parts, 222 and 36541, that added together give a palindrome (36763).

The spelling of 22236541 in words is "twenty-two million, two hundred thirty-six thousand, five hundred forty-one".