16804057 has 2 divisors, whose sum is σ = 16804058. Its totient is φ = 16804056.

The previous prime is 16804033. The next prime is 16804087. The reversal of 16804057 is 75040861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13995081 + 2808976 = 3741^2 + 1676^2 .

It is a cyclic number.

It is not a de Polignac number, because 16804057 - 2⁷ = 16803929 is a prime.

It is not a weakly prime, because it can be changed into another prime (16804027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8402028 + 8402029.

It is an arithmetic number, because the mean of its divisors is an integer number (8402029).

Almost surely, 2^16804057 is an apocalyptic number.

It is an amenable number.

16804057 is a deficient number, since it is larger than the sum of its proper divisors (1).

16804057 is an equidigital number, since it uses as much as digits as its factorization.

16804057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 16804057 is about 4099.2751798336. The cubic root of 16804057 is about 256.1364476464.

The spelling of 16804057 in words is "sixteen million, eight hundred four thousand, fifty-seven".