205955061 has 24 divisors (see below), whose sum is σ = 305419680. Its totient is φ = 123304896.

The previous prime is 205955039. The next prime is 205955089. The reversal of 205955061 is 160559502.

It is not a de Polignac number, because 205955061 - 2⁶ = 205954997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205955461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13270 + ... + 24248.

It is an arithmetic number, because the mean of its divisors is an integer number (12725820).

Almost surely, 2^205955061 is an apocalyptic number.

It is an amenable number.

205955061 is a deficient number, since it is larger than the sum of its proper divisors (99464619).

205955061 is a wasteful number, since it uses less digits than its factorization.

205955061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11045 (or 11032 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 205955061 is about 14351.1344847716. The cubic root of 205955061 is about 590.5511091123.

The spelling of 205955061 in words is "two hundred five million, nine hundred fifty-five thousand, sixty-one".