1566043 has 2 divisors, whose sum is σ = 1566044. Its totient is φ = 1566042.

The previous prime is 1566031. The next prime is 1566049. The reversal of 1566043 is 3406651.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1566043 is a prime.

It is a nialpdrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 1565999 and 1566017.

It is not a weakly prime, because it can be changed into another prime (1566049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 783021 + 783022.

It is an arithmetic number, because the mean of its divisors is an integer number (783022).

2^1566043 is an apocalyptic number.

1566043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1566043 is an equidigital number, since it uses as much as digits as its factorization.

1566043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1566043 is about 1251.4163975272. The cubic root of 1566043 is about 116.1273620935.

It can be divided in two parts, 15660 and 43, that multiplied together give a triangular number (673380 = T₁₁₆₀).

The spelling of 1566043 in words is "one million, five hundred sixty-six thousand, forty-three".