16905541 has 2 divisors, whose sum is σ = 16905542. Its totient is φ = 16905540.

The previous prime is 16905527. The next prime is 16905563. The reversal of 16905541 is 14550961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14032516 + 2873025 = 3746^2 + 1695^2 .

It is an emirp because it is prime and its reverse (14550961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16905541 - 2¹¹ = 16903493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16905341) 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, 8452770 + 8452771.

It is an arithmetic number, because the mean of its divisors is an integer number (8452771).

Almost surely, 2^16905541 is an apocalyptic number.

It is an amenable number.

16905541 is a deficient number, since it is larger than the sum of its proper divisors (1).

16905541 is an equidigital number, since it uses as much as digits as its factorization.

16905541 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 31.

The square root of 16905541 is about 4111.6348330074. The cubic root of 16905541 is about 256.6510376346.

The spelling of 16905541 in words is "sixteen million, nine hundred five thousand, five hundred forty-one".