16505273 has 2 divisors, whose sum is σ = 16505274. Its totient is φ = 16505272.

The previous prime is 16505267. The next prime is 16505303. The reversal of 16505273 is 37250561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12694969 + 3810304 = 3563^2 + 1952^2 .

It is a cyclic number.

It is not a de Polignac number, because 16505273 - 2⁸ = 16505017 is a prime.

It is not a weakly prime, because it can be changed into another prime (16505213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8252636 + 8252637.

It is an arithmetic number, because the mean of its divisors is an integer number (8252637).

Almost surely, 2^16505273 is an apocalyptic number.

It is an amenable number.

16505273 is a deficient number, since it is larger than the sum of its proper divisors (1).

16505273 is an equidigital number, since it uses as much as digits as its factorization.

16505273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 16505273 is about 4062.6682119021. The cubic root of 16505273 is about 254.6092850244.

The spelling of 16505273 in words is "sixteen million, five hundred five thousand, two hundred seventy-three".