16548401 has 2 divisors, whose sum is σ = 16548402. Its totient is φ = 16548400.

The previous prime is 16548383. The next prime is 16548403. The reversal of 16548401 is 10484561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8708401 + 7840000 = 2951^2 + 2800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16548401 is a prime.

Together with 16548403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16548403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8274200 + 8274201.

It is an arithmetic number, because the mean of its divisors is an integer number (8274201).

Almost surely, 2^16548401 is an apocalyptic number.

It is an amenable number.

16548401 is a deficient number, since it is larger than the sum of its proper divisors (1).

16548401 is an equidigital number, since it uses as much as digits as its factorization.

16548401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 16548401 is about 4067.9725908614. The cubic root of 16548401 is about 254.8308554057.

Subtracting from 16548401 its product of nonzero digits (3840), we obtain a palindrome (16544561).

The spelling of 16548401 in words is "sixteen million, five hundred forty-eight thousand, four hundred one".