561133 has 4 divisors (see below), whose sum is σ = 573120. Its totient is φ = 549148.

The previous prime is 561109. The next prime is 561161. The reversal of 561133 is 331165.

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 561133 - 2⁵ = 561101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561103) 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, 5923 + ... + 6016.

It is an arithmetic number, because the mean of its divisors is an integer number (143280).

2⁵⁶¹¹³³ is an apocalyptic number.

It is an amenable number.

561133 is a deficient number, since it is larger than the sum of its proper divisors (11987).

561133 is a wasteful number, since it uses less digits than its factorization.

561133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11986.

The product of its digits is 270, while the sum is 19.

The square root of 561133 is about 749.0881123072. The cubic root of 561133 is about 82.4812568379.

Adding to 561133 its reverse (331165), we get a palindrome (892298).

The spelling of 561133 in words is "five hundred sixty-one thousand, one hundred thirty-three".