561895 has 8 divisors (see below), whose sum is σ = 681120. Its totient is φ = 444960.

The previous prime is 561839. The next prime is 561907. The reversal of 561895 is 598165.

561895 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 561895 - 2⁷ = 561767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561895.

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, 30 + ... + 1060.

It is an arithmetic number, because the mean of its divisors is an integer number (85140).

2⁵⁶¹⁸⁹⁵ is an apocalyptic number.

561895 is a deficient number, since it is larger than the sum of its proper divisors (119225).

561895 is a wasteful number, since it uses less digits than its factorization.

561895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145.

The product of its digits is 10800, while the sum is 34.

The square root of 561895 is about 749.5965581565. The cubic root of 561895 is about 82.5185755540.

The spelling of 561895 in words is "five hundred sixty-one thousand, eight hundred ninety-five".