566501 has 4 divisors (see below), whose sum is σ = 610092. Its totient is φ = 522912.

The previous prime is 566453. The next prime is 566521. The reversal of 566501 is 105665.

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 112225 + 454276 = 335^2 + 674^2 .

It is not a de Polignac number, because 566501 - 2⁶ = 566437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 566501.

It is not an unprimeable number, because it can be changed into a prime (566521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21776 + ... + 21801.

It is an arithmetic number, because the mean of its divisors is an integer number (152523).

2⁵⁶⁶⁵⁰¹ is an apocalyptic number.

It is an amenable number.

566501 is a deficient number, since it is larger than the sum of its proper divisors (43591).

566501 is a wasteful number, since it uses less digits than its factorization.

566501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43590.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 566501 is about 752.6626070159. The cubic root of 566501 is about 82.7434376860.

The spelling of 566501 in words is "five hundred sixty-six thousand, five hundred one".