205061061 has 8 divisors (see below), whose sum is σ = 273873600. Its totient is φ = 136477952.

The previous prime is 205061057. The next prime is 205061069. The reversal of 205061061 is 160160502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205061061 - 2² = 205061057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205061069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55260 + ... + 58853.

It is an arithmetic number, because the mean of its divisors is an integer number (34234200).

Almost surely, 2^205061061 is an apocalyptic number.

It is an amenable number.

205061061 is a deficient number, since it is larger than the sum of its proper divisors (68812539).

205061061 is a wasteful number, since it uses less digits than its factorization.

205061061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114715.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 205061061 is about 14319.9532471304. The cubic root of 205061061 is about 589.6953909757.

The spelling of 205061061 in words is "two hundred five million, sixty-one thousand, sixty-one".