16316501 has 2 divisors, whose sum is σ = 16316502. Its totient is φ = 16316500.

The previous prime is 16316491. The next prime is 16316507. The reversal of 16316501 is 10561361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14938225 + 1378276 = 3865^2 + 1174^2 .

It is an emirp because it is prime and its reverse (10561361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16316501 - 2¹⁰ = 16315477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16316507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8158250 + 8158251.

It is an arithmetic number, because the mean of its divisors is an integer number (8158251).

Almost surely, 2^16316501 is an apocalyptic number.

It is an amenable number.

16316501 is a deficient number, since it is larger than the sum of its proper divisors (1).

16316501 is an equidigital number, since it uses as much as digits as its factorization.

16316501 is an evil number, because the sum of its binary digits is even.

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

The square root of 16316501 is about 4039.3688863485. The cubic root of 16316501 is about 253.6348992248.

Adding to 16316501 its reverse (10561361), we get a palindrome (26877862).

The spelling of 16316501 in words is "sixteen million, three hundred sixteen thousand, five hundred one".