565901 has 6 divisors (see below), whose sum is σ = 658350. Its totient is φ = 485016.

The previous prime is 565891. The next prime is 565907. The reversal of 565901 is 109565.

It can be written as a sum of positive squares in only one way, i.e., 561001 + 4900 = 749^2 + 70^2 .

It is not a de Polignac number, because 565901 - 2¹⁴ = 549517 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 565901.

It is not an unprimeable number, because it can be changed into a prime (565907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5726 + ... + 5823.

It is an arithmetic number, because the mean of its divisors is an integer number (109725).

2⁵⁶⁵⁹⁰¹ is an apocalyptic number.

It is an amenable number.

565901 is a deficient number, since it is larger than the sum of its proper divisors (92449).

565901 is a wasteful number, since it uses less digits than its factorization.

565901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11563 (or 11556 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 565901 is about 752.2639164549. The cubic root of 565901 is about 82.7142152603.

The spelling of 565901 in words is "five hundred sixty-five thousand, nine hundred one".