561426 has 16 divisors (see below), whose sum is σ = 1132704. Its totient is φ = 185504.

The previous prime is 561419. The next prime is 561439. The reversal of 561426 is 624165.

It is a junction number, because it is equal to n+sod(n) for n = 561396 and 561405.

It is an unprimeable number.

561426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (70794).

2⁵⁶¹⁴²⁶ is an apocalyptic number.

561426 is an abundant number, since it is smaller than the sum of its proper divisors (571278).

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

561426 is a wasteful number, since it uses less digits than its factorization.

561426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825.

The product of its digits is 1440, while the sum is 24.

The square root of 561426 is about 749.2836579027. The cubic root of 561426 is about 82.4956104184.

The spelling of 561426 in words is "five hundred sixty-one thousand, four hundred twenty-six".