561795 has 32 divisors (see below), whose sum is σ = 1005312. Its totient is φ = 266112.

The previous prime is 561787. The next prime is 561797. The reversal of 561795 is 597165.

561795 = T₁₆ + T₁₇ + ... + T₁₄₉.

It is not a de Polignac number, because 561795 - 2³ = 561787 is a prime.

It is a super-2 number, since 2×561795² = 631227244050, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 561795.

It is not an unprimeable number, because it can be changed into a prime (561797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8352 + ... + 8418.

It is an arithmetic number, because the mean of its divisors is an integer number (31416).

2⁵⁶¹⁷⁹⁵ is an apocalyptic number.

561795 is a deficient number, since it is larger than the sum of its proper divisors (443517).

561795 is a wasteful number, since it uses less digits than its factorization.

561795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131.

The product of its digits is 9450, while the sum is 33.

The square root of 561795 is about 749.5298526410. The cubic root of 561795 is about 82.5136800088.

The spelling of 561795 in words is "five hundred sixty-one thousand, seven hundred ninety-five".