16445243 has 2 divisors, whose sum is σ = 16445244. Its totient is φ = 16445242.

The previous prime is 16445237. The next prime is 16445251. The reversal of 16445243 is 34254461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16445243 - 2⁴ = 16445227 is a prime.

It is not a weakly prime, because it can be changed into another prime (16445743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8222621 + 8222622.

It is an arithmetic number, because the mean of its divisors is an integer number (8222622).

Almost surely, 2^16445243 is an apocalyptic number.

16445243 is a deficient number, since it is larger than the sum of its proper divisors (1).

16445243 is an equidigital number, since it uses as much as digits as its factorization.

16445243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 29.

The square root of 16445243 is about 4055.2734802970. The cubic root of 16445243 is about 254.3002370704.

The spelling of 16445243 in words is "sixteen million, four hundred forty-five thousand, two hundred forty-three".