16553539 has 2 divisors, whose sum is σ = 16553540. Its totient is φ = 16553538.

The previous prime is 16553533. The next prime is 16553549. The reversal of 16553539 is 93535561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16553539 - 2³ = 16553531 is a prime.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 16553498 and 16553507.

It is not a weakly prime, because it can be changed into another prime (16553531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8276769 + 8276770.

It is an arithmetic number, because the mean of its divisors is an integer number (8276770).

Almost surely, 2^16553539 is an apocalyptic number.

16553539 is a deficient number, since it is larger than the sum of its proper divisors (1).

16553539 is an equidigital number, since it uses as much as digits as its factorization.

16553539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60750, while the sum is 37.

The square root of 16553539 is about 4068.6040603627. The cubic root of 16553539 is about 254.8572262406.

The spelling of 16553539 in words is "sixteen million, five hundred fifty-three thousand, five hundred thirty-nine".