16573901 has 2 divisors, whose sum is σ = 16573902. Its totient is φ = 16573900.

The previous prime is 16573873. The next prime is 16573903. The reversal of 16573901 is 10937561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12432676 + 4141225 = 3526^2 + 2035^2 .

It is a cyclic number.

It is not a de Polignac number, because 16573901 - 2¹⁰ = 16572877 is a prime.

Together with 16573903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16573903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8286950 + 8286951.

It is an arithmetic number, because the mean of its divisors is an integer number (8286951).

Almost surely, 2^16573901 is an apocalyptic number.

It is an amenable number.

16573901 is a deficient number, since it is larger than the sum of its proper divisors (1).

16573901 is an equidigital number, since it uses as much as digits as its factorization.

16573901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 16573901 is about 4071.1056237833. The cubic root of 16573901 is about 254.9616807728.

The spelling of 16573901 in words is "sixteen million, five hundred seventy-three thousand, nine hundred one".