16257229 has 2 divisors, whose sum is σ = 16257230. Its totient is φ = 16257228.

The previous prime is 16257223. The next prime is 16257247. The reversal of 16257229 is 92275261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10017225 + 6240004 = 3165^2 + 2498^2 .

It is a cyclic number.

It is not a de Polignac number, because 16257229 - 2³ = 16257221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16257194 and 16257203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16257221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8128614 + 8128615.

It is an arithmetic number, because the mean of its divisors is an integer number (8128615).

Almost surely, 2^16257229 is an apocalyptic number.

It is an amenable number.

16257229 is a deficient number, since it is larger than the sum of its proper divisors (1).

16257229 is an equidigital number, since it uses as much as digits as its factorization.

16257229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 16257229 is about 4032.0254215468. The cubic root of 16257229 is about 253.3274050244.

The spelling of 16257229 in words is "sixteen million, two hundred fifty-seven thousand, two hundred twenty-nine".