16516103 has 4 divisors (see below), whose sum is σ = 16762680. Its totient is φ = 16269528.

The previous prime is 16516099. The next prime is 16516121. The reversal of 16516103 is 30161561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30161561 = 239 ⋅126199.

It is a cyclic number.

It is not a de Polignac number, because 16516103 - 2² = 16516099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16516183) 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, 123188 + ... + 123321.

It is an arithmetic number, because the mean of its divisors is an integer number (4190670).

Almost surely, 2^16516103 is an apocalyptic number.

16516103 is a deficient number, since it is larger than the sum of its proper divisors (246577).

16516103 is an equidigital number, since it uses as much as digits as its factorization.

16516103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246576.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 16516103 is about 4064.0008612204. Note that the first 3 decimals coincide. The cubic root of 16516103 is about 254.6649604779.

Adding to 16516103 its reverse (30161561), we get a palindrome (46677664).

The spelling of 16516103 in words is "sixteen million, five hundred sixteen thousand, one hundred three".