16542011 has 4 divisors (see below), whose sum is σ = 16594512. Its totient is φ = 16489512.

The previous prime is 16541981. The next prime is 16542017. The reversal of 16542011 is 11024561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16542011 - 2⁶ = 16541947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16542017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25775 + ... + 26408.

It is an arithmetic number, because the mean of its divisors is an integer number (4148628).

Almost surely, 2^16542011 is an apocalyptic number.

16542011 is a deficient number, since it is larger than the sum of its proper divisors (52501).

16542011 is an equidigital number, since it uses as much as digits as its factorization.

16542011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52500.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 16542011 is about 4067.1871115059. The cubic root of 16542011 is about 254.7980510519.

Adding to 16542011 its reverse (11024561), we get a palindrome (27566572).

The spelling of 16542011 in words is "sixteen million, five hundred forty-two thousand, eleven".