16256503 has 2 divisors, whose sum is σ = 16256504. Its totient is φ = 16256502.

The previous prime is 16256497. The next prime is 16256507. The reversal of 16256503 is 30565261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16256503 - 2⁹ = 16255991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16256507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8128251 + 8128252.

It is an arithmetic number, because the mean of its divisors is an integer number (8128252).

Almost surely, 2^16256503 is an apocalyptic number.

16256503 is a deficient number, since it is larger than the sum of its proper divisors (1).

16256503 is an equidigital number, since it uses as much as digits as its factorization.

16256503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 16256503 is about 4031.9353913474. The cubic root of 16256503 is about 253.3236340162.

It can be divided in two parts, 1625 and 6503, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 16256503 in words is "sixteen million, two hundred fifty-six thousand, five hundred three".