16422503 has 2 divisors, whose sum is σ = 16422504. Its totient is φ = 16422502.

The previous prime is 16422491. The next prime is 16422521. The reversal of 16422503 is 30522461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16422503 - 2⁸ = 16422247 is a prime.

It is a super-4 number, since 4×16422503⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16422533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8211251 + 8211252.

It is an arithmetic number, because the mean of its divisors is an integer number (8211252).

Almost surely, 2^16422503 is an apocalyptic number.

16422503 is a deficient number, since it is larger than the sum of its proper divisors (1).

16422503 is an equidigital number, since it uses as much as digits as its factorization.

16422503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 16422503 is about 4052.4687537352. The cubic root of 16422503 is about 254.1829700313.

Adding to 16422503 its reverse (30522461), we get a palindrome (46944964).

The spelling of 16422503 in words is "sixteen million, four hundred twenty-two thousand, five hundred three".