205003061 has 4 divisors (see below), whose sum is σ = 205241472. Its totient is φ = 204764652.

The previous prime is 205003037. The next prime is 205003067. The reversal of 205003061 is 160300502.

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 205003061 - 2⁶ = 205002997 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 (205003067) 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, 117911 + ... + 119636.

It is an arithmetic number, because the mean of its divisors is an integer number (51310368).

Almost surely, 2^205003061 is an apocalyptic number.

It is an amenable number.

205003061 is a deficient number, since it is larger than the sum of its proper divisors (238411).

205003061 is an equidigital number, since it uses as much as digits as its factorization.

205003061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238410.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 205003061 is about 14317.9279576341. The cubic root of 205003061 is about 589.6397887441.

Adding to 205003061 its reverse (160300502), we get a palindrome (365303563).

The spelling of 205003061 in words is "two hundred five million, three thousand, sixty-one".