22180453 has 2 divisors, whose sum is σ = 22180454. Its totient is φ = 22180452.

The previous prime is 22180421. The next prime is 22180463. The reversal of 22180453 is 35408122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21687649 + 492804 = 4657^2 + 702^2 .

It is a cyclic number.

It is not a de Polignac number, because 22180453 - 2⁵ = 22180421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22180463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11090226 + 11090227.

It is an arithmetic number, because the mean of its divisors is an integer number (11090227).

Almost surely, 2^22180453 is an apocalyptic number.

It is an amenable number.

22180453 is a deficient number, since it is larger than the sum of its proper divisors (1).

22180453 is an equidigital number, since it uses as much as digits as its factorization.

22180453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 22180453 is about 4709.6128290975. The cubic root of 22180453 is about 280.9679636565.

Adding to 22180453 its reverse (35408122), we get a palindrome (57588575).

The spelling of 22180453 in words is "twenty-two million, one hundred eighty thousand, four hundred fifty-three".