16317251 has 2 divisors, whose sum is σ = 16317252. Its totient is φ = 16317250.

The previous prime is 16317233. The next prime is 16317277. The reversal of 16317251 is 15271361.

It is an a-pointer prime, because the next prime (16317277) can be obtained adding 16317251 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16317251 - 2¹⁰ = 16316227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16317251.

It is not a weakly prime, because it can be changed into another prime (16317151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8158625 + 8158626.

It is an arithmetic number, because the mean of its divisors is an integer number (8158626).

Almost surely, 2^16317251 is an apocalyptic number.

16317251 is a deficient number, since it is larger than the sum of its proper divisors (1).

16317251 is an equidigital number, since it uses as much as digits as its factorization.

16317251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 26.

The square root of 16317251 is about 4039.4617215664. The cubic root of 16317251 is about 253.6387853369.

The spelling of 16317251 in words is "sixteen million, three hundred seventeen thousand, two hundred fifty-one".