16516427 has 2 divisors, whose sum is σ = 16516428. Its totient is φ = 16516426.

The previous prime is 16516417. The next prime is 16516439. The reversal of 16516427 is 72461561.

16516427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (72461561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16516427 - 2¹⁶ = 16450891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16516393 and 16516402.

It is not a weakly prime, because it can be changed into another prime (16516417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8258213 + 8258214.

It is an arithmetic number, because the mean of its divisors is an integer number (8258214).

Almost surely, 2^16516427 is an apocalyptic number.

16516427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16516427 is an equidigital number, since it uses as much as digits as its factorization.

16516427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 16516427 is about 4064.0407232212. The cubic root of 16516427 is about 254.6666257397. Note that the first 4 decimals are identical.

Adding to 16516427 its reverse (72461561), we get a palindrome (88977988).

The spelling of 16516427 in words is "sixteen million, five hundred sixteen thousand, four hundred twenty-seven".