16501249 has 2 divisors, whose sum is σ = 16501250. Its totient is φ = 16501248.

The previous prime is 16501241. The next prime is 16501273. The reversal of 16501249 is 94210561.

16501249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8661249 + 7840000 = 2943^2 + 2800^2 .

It is a cyclic number.

It is not a de Polignac number, because 16501249 - 2³ = 16501241 is a prime.

It is not a weakly prime, because it can be changed into another prime (16501241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250624 + 8250625.

It is an arithmetic number, because the mean of its divisors is an integer number (8250625).

Almost surely, 2^16501249 is an apocalyptic number.

It is an amenable number.

16501249 is a deficient number, since it is larger than the sum of its proper divisors (1).

16501249 is an equidigital number, since it uses as much as digits as its factorization.

16501249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 16501249 is about 4062.1729406809. The cubic root of 16501249 is about 254.5885920205.

The spelling of 16501249 in words is "sixteen million, five hundred one thousand, two hundred forty-nine".