561374 has 32 divisors (see below), whose sum is σ = 1036800. Its totient is φ = 224640.

The previous prime is 561373. The next prime is 561377. The reversal of 561374 is 473165.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7067 + ... + 7145.

It is an arithmetic number, because the mean of its divisors is an integer number (32400).

2⁵⁶¹³⁷⁴ is an apocalyptic number.

561374 is a deficient number, since it is larger than the sum of its proper divisors (475426).

561374 is a wasteful number, since it uses less digits than its factorization.

561374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128.

The product of its digits is 2520, while the sum is 26.

The square root of 561374 is about 749.2489572899. The cubic root of 561374 is about 82.4930633898.

Subtracting from 561374 its reverse (473165), we obtain a square (88209 = 297²).

The spelling of 561374 in words is "five hundred sixty-one thousand, three hundred seventy-four".