561326 has 16 divisors (see below), whose sum is σ = 881280. Its totient is φ = 267960.

The previous prime is 561313. The next prime is 561343. The reversal of 561326 is 623165.

It is an Ulam number.

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, 7871 + ... + 7941.

It is an arithmetic number, because the mean of its divisors is an integer number (55080).

2⁵⁶¹³²⁶ is an apocalyptic number.

561326 is a deficient number, since it is larger than the sum of its proper divisors (319954).

561326 is a wasteful number, since it uses less digits than its factorization.

561326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199.

The product of its digits is 1080, while the sum is 23.

The square root of 561326 is about 749.2169245285. The cubic root of 561326 is about 82.4907121469.

The spelling of 561326 in words is "five hundred sixty-one thousand, three hundred twenty-six".