16542817 has 2 divisors, whose sum is σ = 16542818. Its totient is φ = 16542816.

The previous prime is 16542797. The next prime is 16542829. The reversal of 16542817 is 71824561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13905441 + 2637376 = 3729^2 + 1624^2 .

It is a cyclic number.

It is not a de Polignac number, because 16542817 - 2¹⁵ = 16510049 is a prime.

It is not a weakly prime, because it can be changed into another prime (16542017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8271408 + 8271409.

It is an arithmetic number, because the mean of its divisors is an integer number (8271409).

Almost surely, 2^16542817 is an apocalyptic number.

It is an amenable number.

16542817 is a deficient number, since it is larger than the sum of its proper divisors (1).

16542817 is an equidigital number, since it uses as much as digits as its factorization.

16542817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 34.

The square root of 16542817 is about 4067.2861959788. The cubic root of 16542817 is about 254.8021892810.

The spelling of 16542817 in words is "sixteen million, five hundred forty-two thousand, eight hundred seventeen".