561534 has 16 divisors (see below), whose sum is σ = 1159680. Its totient is φ = 181080.

The previous prime is 561529. The next prime is 561551. The reversal of 561534 is 435165.

561534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1324 + ... + 1695.

It is an arithmetic number, because the mean of its divisors is an integer number (72480).

2⁵⁶¹⁵³⁴ is an apocalyptic number.

561534 is an abundant number, since it is smaller than the sum of its proper divisors (598146).

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

561534 is a wasteful number, since it uses less digits than its factorization.

561534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055.

The product of its digits is 1800, while the sum is 24.

The square root of 561534 is about 749.3557232717. The cubic root of 561534 is about 82.5008998984.

Adding to 561534 its reverse (435165), we get a palindrome (996699).

The spelling of 561534 in words is "five hundred sixty-one thousand, five hundred thirty-four".