564481 has 4 divisors (see below), whose sum is σ = 566100. Its totient is φ = 562864.

The previous prime is 564467. The next prime is 564491. The reversal of 564481 is 184465.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 193600 + 370881 = 440^2 + 609^2 .

It is a cyclic number.

It is not a de Polignac number, because 564481 - 2⁵ = 564449 is a prime.

It is a super-2 number, since 2×564481² = 637277598722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46 + ... + 1063.

It is an arithmetic number, because the mean of its divisors is an integer number (141525).

2⁵⁶⁴⁴⁸¹ is an apocalyptic number.

It is an amenable number.

564481 is a deficient number, since it is larger than the sum of its proper divisors (1619).

564481 is a wasteful number, since it uses less digits than its factorization.

564481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618.

The product of its digits is 3840, while the sum is 28.

The square root of 564481 is about 751.3195059361. The cubic root of 564481 is about 82.6449731347.

Subtracting from 564481 its sum of digits (28), we obtain a triangular number (564453 = T₁₀₆₂).

The spelling of 564481 in words is "five hundred sixty-four thousand, four hundred eighty-one".