22540373 has 2 divisors, whose sum is σ = 22540374. Its totient is φ = 22540372.

The previous prime is 22540369. The next prime is 22540387. The reversal of 22540373 is 37304522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18861649 + 3678724 = 4343^2 + 1918^2 .

It is a cyclic number.

It is not a de Polignac number, because 22540373 - 2² = 22540369 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82540373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11270186 + 11270187.

It is an arithmetic number, because the mean of its divisors is an integer number (11270187).

Almost surely, 2^22540373 is an apocalyptic number.

It is an amenable number.

22540373 is a deficient number, since it is larger than the sum of its proper divisors (1).

22540373 is an equidigital number, since it uses as much as digits as its factorization.

22540373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 22540373 is about 4747.6702707749. The cubic root of 22540373 is about 282.4795630920.

Adding to 22540373 its reverse (37304522), we get a palindrome (59844895).

The spelling of 22540373 in words is "twenty-two million, five hundred forty thousand, three hundred seventy-three".