22261245 has 16 divisors (see below), whose sum is σ = 37713600. Its totient is φ = 11174144.

The previous prime is 22261207. The next prime is 22261247. The reversal of 22261245 is 54216222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22261245 - 2¹¹ = 22259197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22261247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43395 + ... + 43904.

It is an arithmetic number, because the mean of its divisors is an integer number (2357100).

Almost surely, 2^22261245 is an apocalyptic number.

It is an amenable number.

22261245 is a deficient number, since it is larger than the sum of its proper divisors (15452355).

22261245 is a wasteful number, since it uses less digits than its factorization.

22261245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87324.

The product of its digits is 1920, while the sum is 24.

The square root of 22261245 is about 4718.1823830793. The cubic root of 22261245 is about 281.3086909615.

Adding to 22261245 its reverse (54216222), we get a palindrome (76477467).

The spelling of 22261245 in words is "twenty-two million, two hundred sixty-one thousand, two hundred forty-five".