22501273 has 2 divisors, whose sum is σ = 22501274. Its totient is φ = 22501272.

The previous prime is 22501267. The next prime is 22501321. The reversal of 22501273 is 37210522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17081689 + 5419584 = 4133^2 + 2328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22501273 is a prime.

It is not a weakly prime, because it can be changed into another prime (22501223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11250636 + 11250637.

It is an arithmetic number, because the mean of its divisors is an integer number (11250637).

Almost surely, 2^22501273 is an apocalyptic number.

It is an amenable number.

22501273 is a deficient number, since it is larger than the sum of its proper divisors (1).

22501273 is an equidigital number, since it uses as much as digits as its factorization.

22501273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 22501273 is about 4743.5506743367. The cubic root of 22501273 is about 282.3161327366.

Adding to 22501273 its reverse (37210522), we get a palindrome (59711795).

The spelling of 22501273 in words is "twenty-two million, five hundred one thousand, two hundred seventy-three".