566121 has 4 divisors (see below), whose sum is σ = 754832. Its totient is φ = 377412.

The previous prime is 566107. The next prime is 566131. The reversal of 566121 is 121665.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 566121 - 2⁵ = 566089 is a prime.

It is a D-number.

It is a Duffinian number.

566121 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 566121.

It is not an unprimeable number, because it can be changed into a prime (566101) 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, 94351 + ... + 94356.

It is an arithmetic number, because the mean of its divisors is an integer number (188708).

2⁵⁶⁶¹²¹ is an apocalyptic number.

It is an amenable number.

566121 is a deficient number, since it is larger than the sum of its proper divisors (188711).

566121 is a wasteful number, since it uses less digits than its factorization.

566121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188710.

The product of its digits is 360, while the sum is 21.

The square root of 566121 is about 752.4101275235. The cubic root of 566121 is about 82.7249325470.

Adding to 566121 its reverse (121665), we get a palindrome (687786).

It can be divided in two parts, 566 and 121, that multiplied together give a palindrome (68486).

The spelling of 566121 in words is "five hundred sixty-six thousand, one hundred twenty-one".