564491 has 2 divisors, whose sum is σ = 564492. Its totient is φ = 564490.

The previous prime is 564467. The next prime is 564497. The reversal of 564491 is 194465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 564491 - 2¹⁰ = 563467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (564497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282245 + 282246.

It is an arithmetic number, because the mean of its divisors is an integer number (282246).

2⁵⁶⁴⁴⁹¹ is an apocalyptic number.

564491 is a deficient number, since it is larger than the sum of its proper divisors (1).

564491 is an equidigital number, since it uses as much as digits as its factorization.

564491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 564491 is about 751.3261608649. The cubic root of 564491 is about 82.6454611611.

The spelling of 564491 in words is "five hundred sixty-four thousand, four hundred ninety-one".