22502273 has 2 divisors, whose sum is σ = 22502274. Its totient is φ = 22502272.

The previous prime is 22502239. The next prime is 22502299. The reversal of 22502273 is 37220522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17909824 + 4592449 = 4232^2 + 2143^2 .

It is a cyclic number.

It is not a de Polignac number, because 22502273 - 2⁶ = 22502209 is a prime.

It is not a weakly prime, because it can be changed into another prime (22502573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11251136 + 11251137.

It is an arithmetic number, because the mean of its divisors is an integer number (11251137).

Almost surely, 2^22502273 is an apocalyptic number.

It is an amenable number.

22502273 is a deficient number, since it is larger than the sum of its proper divisors (1).

22502273 is an equidigital number, since it uses as much as digits as its factorization.

22502273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 22502273 is about 4743.6560794391. The cubic root of 22502273 is about 282.3203148993.

Adding to 22502273 its reverse (37220522), we get a palindrome (59722795).

The spelling of 22502273 in words is "twenty-two million, five hundred two thousand, two hundred seventy-three".