16641533 has 2 divisors, whose sum is σ = 16641534. Its totient is φ = 16641532.

The previous prime is 16641517. The next prime is 16641539. The reversal of 16641533 is 33514661.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16630084 + 11449 = 4078^2 + 107^2 .

It is a cyclic number.

It is not a de Polignac number, because 16641533 - 2⁴ = 16641517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16641496 and 16641505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16641539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8320766 + 8320767.

It is an arithmetic number, because the mean of its divisors is an integer number (8320767).

Almost surely, 2^16641533 is an apocalyptic number.

It is an amenable number.

16641533 is a deficient number, since it is larger than the sum of its proper divisors (1).

16641533 is an equidigital number, since it uses as much as digits as its factorization.

16641533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 16641533 is about 4079.4035103186. The cubic root of 16641533 is about 255.3080117610.

The spelling of 16641533 in words is "sixteen million, six hundred forty-one thousand, five hundred thirty-three".