561395 has 4 divisors (see below), whose sum is σ = 673680. Its totient is φ = 449112.

The previous prime is 561389. The next prime is 561409. The reversal of 561395 is 593165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 593165 = 5 ⋅118633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561395 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 561395.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56135 + ... + 56144.

It is an arithmetic number, because the mean of its divisors is an integer number (168420).

2⁵⁶¹³⁹⁵ is an apocalyptic number.

561395 is a deficient number, since it is larger than the sum of its proper divisors (112285).

561395 is a wasteful number, since it uses less digits than its factorization.

561395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112284.

The product of its digits is 4050, while the sum is 29.

The square root of 561395 is about 749.2629711924. The cubic root of 561395 is about 82.4940920165.

The spelling of 561395 in words is "five hundred sixty-one thousand, three hundred ninety-five".