22145503 has 2 divisors, whose sum is σ = 22145504. Its totient is φ = 22145502.

The previous prime is 22145477. The next prime is 22145521. The reversal of 22145503 is 30554122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22145503 - 2⁵ = 22145471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22145533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072751 + 11072752.

It is an arithmetic number, because the mean of its divisors is an integer number (11072752).

Almost surely, 2^22145503 is an apocalyptic number.

22145503 is a deficient number, since it is larger than the sum of its proper divisors (1).

22145503 is an equidigital number, since it uses as much as digits as its factorization.

22145503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 22145503 is about 4705.9008701842. The cubic root of 22145503 is about 280.8203112379.

Adding to 22145503 its reverse (30554122), we get a palindrome (52699625).

The spelling of 22145503 in words is "twenty-two million, one hundred forty-five thousand, five hundred three".