561934 has 4 divisors (see below), whose sum is σ = 842904. Its totient is φ = 280966.

The previous prime is 561931. The next prime is 561943. The reversal of 561934 is 439165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 439165 = 5 ⋅87833.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140482 + ... + 140485.

It is an arithmetic number, because the mean of its divisors is an integer number (210726).

2⁵⁶¹⁹³⁴ is an apocalyptic number.

561934 is a deficient number, since it is larger than the sum of its proper divisors (280970).

561934 is a wasteful number, since it uses less digits than its factorization.

561934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280969.

The product of its digits is 3240, while the sum is 28.

The square root of 561934 is about 749.6225716986. The cubic root of 561934 is about 82.5204846592.

The spelling of 561934 in words is "five hundred sixty-one thousand, nine hundred thirty-four".