16423553 has 2 divisors, whose sum is σ = 16423554. Its totient is φ = 16423552.

The previous prime is 16423531. The next prime is 16423559. The reversal of 16423553 is 35532461.

16423553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16386304 + 37249 = 4048^2 + 193^2 .

It is an emirp because it is prime and its reverse (35532461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16423553 - 2⁶ = 16423489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16423559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8211776 + 8211777.

It is an arithmetic number, because the mean of its divisors is an integer number (8211777).

Almost surely, 2^16423553 is an apocalyptic number.

It is an amenable number.

16423553 is a deficient number, since it is larger than the sum of its proper divisors (1).

16423553 is an equidigital number, since it uses as much as digits as its factorization.

16423553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 16423553 is about 4052.5983023241. The cubic root of 16423553 is about 254.1883871193.

The spelling of 16423553 in words is "sixteen million, four hundred twenty-three thousand, five hundred fifty-three".