561201 has 4 divisors (see below), whose sum is σ = 748272. Its totient is φ = 374132.

The previous prime is 561199. The next prime is 561229. The reversal of 561201 is 102165.

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.

It is a cyclic number.

It is not a de Polignac number, because 561201 - 2¹ = 561199 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (561251) 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, 93531 + ... + 93536.

It is an arithmetic number, because the mean of its divisors is an integer number (187068).

2⁵⁶¹²⁰¹ is an apocalyptic number.

It is an amenable number.

561201 is a deficient number, since it is larger than the sum of its proper divisors (187071).

561201 is a wasteful number, since it uses less digits than its factorization.

561201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187070.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 561201 is about 749.1334994512. The cubic root of 561201 is about 82.4845884894.

Adding to 561201 its reverse (102165), we get a palindrome (663366).

The spelling of 561201 in words is "five hundred sixty-one thousand, two hundred one".