205056011 has 4 divisors (see below), whose sum is σ = 205157472. Its totient is φ = 204954552.

The previous prime is 205055959. The next prime is 205056031. The reversal of 205056011 is 110650502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205056011 - 2⁶ = 205055947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205056031) 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, 47636 + ... + 51761.

It is an arithmetic number, because the mean of its divisors is an integer number (51289368).

Almost surely, 2^205056011 is an apocalyptic number.

205056011 is a deficient number, since it is larger than the sum of its proper divisors (101461).

205056011 is an equidigital number, since it uses as much as digits as its factorization.

205056011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101460.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 205056011 is about 14319.7769186534. The cubic root of 205056011 is about 589.6905501636.

The spelling of 205056011 in words is "two hundred five million, fifty-six thousand, eleven".