16512113 has 4 divisors (see below), whose sum is σ = 16527588. Its totient is φ = 16496640.

The previous prime is 16512109. The next prime is 16512131. The reversal of 16512113 is 31121561.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5276209 + 11235904 = 2297^2 + 3352^2 .

It is a cyclic number.

It is not a de Polignac number, because 16512113 - 2² = 16512109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16512163) 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, 6008 + ... + 8313.

It is an arithmetic number, because the mean of its divisors is an integer number (4131897).

Almost surely, 2^16512113 is an apocalyptic number.

It is an amenable number.

16512113 is a deficient number, since it is larger than the sum of its proper divisors (15475).

16512113 is a wasteful number, since it uses less digits than its factorization.

16512113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15474.

The product of its digits is 180, while the sum is 20.

The square root of 16512113 is about 4063.5099360036. The cubic root of 16512113 is about 254.6444513011.

Adding to 16512113 its reverse (31121561), we get a palindrome (47633674).

The spelling of 16512113 in words is "sixteen million, five hundred twelve thousand, one hundred thirteen".