16556041 has 2 divisors, whose sum is σ = 16556042. Its totient is φ = 16556040.

The previous prime is 16556017. The next prime is 16556051. The reversal of 16556041 is 14065561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16160400 + 395641 = 4020^2 + 629^2 .

It is a cyclic number.

It is not a de Polignac number, because 16556041 - 2⁵ = 16556009 is a prime.

It is not a weakly prime, because it can be changed into another prime (16556051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8278020 + 8278021.

It is an arithmetic number, because the mean of its divisors is an integer number (8278021).

Almost surely, 2^16556041 is an apocalyptic number.

It is an amenable number.

16556041 is a deficient number, since it is larger than the sum of its proper divisors (1).

16556041 is an equidigital number, since it uses as much as digits as its factorization.

16556041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 16556041 is about 4068.9115252116. The cubic root of 16556041 is about 254.8700658043.

The spelling of 16556041 in words is "sixteen million, five hundred fifty-six thousand, forty-one".