561136 has 20 divisors (see below), whose sum is σ = 1151712. Its totient is φ = 263936.

The previous prime is 561109. The next prime is 561161. The reversal of 561136 is 631165.

561136 is nontrivially palindromic in base 5.

561136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×561136² = 629747220992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760 + ... + 1303.

2⁵⁶¹¹³⁶ is an apocalyptic number.

It is an amenable number.

561136 is an abundant number, since it is smaller than the sum of its proper divisors (590576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561136 is a wasteful number, since it uses less digits than its factorization.

561136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088 (or 2082 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 561136 is about 749.0901147392. The cubic root of 561136 is about 82.4814038282.

The spelling of 561136 in words is "five hundred sixty-one thousand, one hundred thirty-six".