1606552243 has 2 divisors, whose sum is σ = 1606552244. Its totient is φ = 1606552242.

The previous prime is 1606552187. The next prime is 1606552267. The reversal of 1606552243 is 3422556061.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1606552243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1606552199 and 1606552208.

It is not a weakly prime, because it can be changed into another prime (1606552043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803276121 + 803276122.

It is an arithmetic number, because the mean of its divisors is an integer number (803276122).

Almost surely, 2^1606552243 is an apocalyptic number.

1606552243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606552243 is an equidigital number, since it uses as much as digits as its factorization.

1606552243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 1606552243 is about 40081.8193574094. The cubic root of 1606552243 is about 1171.2014937236.

The spelling of 1606552243 in words is "one billion, six hundred six million, five hundred fifty-two thousand, two hundred forty-three".