205061 has 4 divisors (see below), whose sum is σ = 209472. Its totient is φ = 200652.

The previous prime is 205043. The next prime is 205063. The reversal of 205061 is 160502.

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: 160502 = 2 ⋅80251.

It is a cyclic number.

It is not a de Polignac number, because 205061 - 2¹⁴ = 188677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205063) 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, 2135 + ... + 2228.

It is an arithmetic number, because the mean of its divisors is an integer number (52368).

2²⁰⁵⁰⁶¹ is an apocalyptic number.

It is an amenable number.

205061 is a deficient number, since it is larger than the sum of its proper divisors (4411).

205061 is an equidigital number, since it uses as much as digits as its factorization.

205061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 205061 is about 452.8366151274. The cubic root of 205061 is about 58.9695332503.

Adding to 205061 its reverse (160502), we get a palindrome (365563).

The spelling of 205061 in words is "two hundred five thousand, sixty-one".