565001 has 4 divisors (see below), whose sum is σ = 567504. Its totient is φ = 562500.

The previous prime is 564997. The next prime is 565013. The reversal of 565001 is 100565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100565 = 5 ⋅20113.

It is a cyclic number.

It is not a de Polignac number, because 565001 - 2² = 564997 is a prime.

It is a super-2 number, since 2×565001² = 638452260002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875 + ... + 1376.

It is an arithmetic number, because the mean of its divisors is an integer number (141876).

2⁵⁶⁵⁰⁰¹ is an apocalyptic number.

It is an amenable number.

565001 is a deficient number, since it is larger than the sum of its proper divisors (2503).

565001 is a wasteful number, since it uses less digits than its factorization.

565001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 565001 is about 751.6654841085. The cubic root of 565001 is about 82.6703428675.

Adding to 565001 its reverse (100565), we get a palindrome (665566).

The spelling of 565001 in words is "five hundred sixty-five thousand, one".