22244477 has 2 divisors, whose sum is σ = 22244478. Its totient is φ = 22244476.

The previous prime is 22244441. The next prime is 22244491. The reversal of 22244477 is 77444222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13039321 + 9205156 = 3611^2 + 3034^2 .

It is a cyclic number.

It is not a de Polignac number, because 22244477 - 2⁶ = 22244413 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22244777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11122238 + 11122239.

It is an arithmetic number, because the mean of its divisors is an integer number (11122239).

Almost surely, 2^22244477 is an apocalyptic number.

It is an amenable number.

22244477 is a deficient number, since it is larger than the sum of its proper divisors (1).

22244477 is an equidigital number, since it uses as much as digits as its factorization.

22244477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25088, while the sum is 32.

The square root of 22244477 is about 4716.4050928647. The cubic root of 22244477 is about 281.2380424875.

Adding to 22244477 its reverse (77444222), we get a palindrome (99688699).

The spelling of 22244477 in words is "twenty-two million, two hundred forty-four thousand, four hundred seventy-seven".