22563503 has 2 divisors, whose sum is σ = 22563504. Its totient is φ = 22563502.

The previous prime is 22563493. The next prime is 22563511. The reversal of 22563503 is 30536522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22563503 is a prime.

It is a super-2 number, since 2×22563503² = 1018223335262018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22563533) 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, 11281751 + 11281752.

It is an arithmetic number, because the mean of its divisors is an integer number (11281752).

Almost surely, 2^22563503 is an apocalyptic number.

22563503 is a deficient number, since it is larger than the sum of its proper divisors (1).

22563503 is an equidigital number, since it uses as much as digits as its factorization.

22563503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 22563503 is about 4750.1055777740. The cubic root of 22563503 is about 282.5761530150.

The spelling of 22563503 in words is "twenty-two million, five hundred sixty-three thousand, five hundred three".