22226437 has 2 divisors, whose sum is σ = 22226438. Its totient is φ = 22226436.

The previous prime is 22226431. The next prime is 22226453. The reversal of 22226437 is 73462222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19236996 + 2989441 = 4386^2 + 1729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22226437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22226431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11113218 + 11113219.

It is an arithmetic number, because the mean of its divisors is an integer number (11113219).

Almost surely, 2^22226437 is an apocalyptic number.

It is an amenable number.

22226437 is a deficient number, since it is larger than the sum of its proper divisors (1).

22226437 is an equidigital number, since it uses as much as digits as its factorization.

22226437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 28.

The square root of 22226437 is about 4714.4922314073. The cubic root of 22226437 is about 281.1619950499.

Adding to 22226437 its reverse (73462222), we get a palindrome (95688659).

The spelling of 22226437 in words is "twenty-two million, two hundred twenty-six thousand, four hundred thirty-seven".