16016513 has 4 divisors (see below), whose sum is σ = 16109268. Its totient is φ = 15923760.

The previous prime is 16016503. The next prime is 16016521. The reversal of 16016513 is 31561061.

It is a happy number.

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 8898289 + 7118224 = 2983^2 + 2668^2 .

It is a cyclic number.

It is not a de Polignac number, because 16016513 - 2¹⁴ = 16000129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16016503) 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, 46118 + ... + 46463.

It is an arithmetic number, because the mean of its divisors is an integer number (4027317).

Almost surely, 2^16016513 is an apocalyptic number.

It is an amenable number.

16016513 is a deficient number, since it is larger than the sum of its proper divisors (92755).

16016513 is an equidigital number, since it uses as much as digits as its factorization.

16016513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92754.

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

The square root of 16016513 is about 4002.0635926981. The cubic root of 16016513 is about 252.0708679916.

Adding to 16016513 its reverse (31561061), we get a palindrome (47577574).

The spelling of 16016513 in words is "sixteen million, sixteen thousand, five hundred thirteen".