16506106 has 4 divisors (see below), whose sum is σ = 24759162. Its totient is φ = 8253052.

The previous prime is 16506101. The next prime is 16506163. The reversal of 16506106 is 60160561.

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

It can be written as a sum of positive squares in only one way, i.e., 16475481 + 30625 = 4059^2 + 175^2 .

It is not an unprimeable number, because it can be changed into a prime (16506101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4126525 + ... + 4126528.

Almost surely, 2^16506106 is an apocalyptic number.

16506106 is a deficient number, since it is larger than the sum of its proper divisors (8253056).

16506106 is an equidigital number, since it uses as much as digits as its factorization.

16506106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8253055.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 16506106 is about 4062.7707294407. The cubic root of 16506106 is about 254.6135682205.

Adding to 16506106 its reverse (60160561), we get a palindrome (76666667).

The spelling of 16506106 in words is "sixteen million, five hundred six thousand, one hundred six".