205155233 has 4 divisors (see below), whose sum is σ = 205263408. Its totient is φ = 205047060.

The previous prime is 205155227. The next prime is 205155257. The reversal of 205155233 is 332551502.

205155233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 205155233 - 2¹² = 205151137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205175233) 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, 51191 + ... + 55052.

It is an arithmetic number, because the mean of its divisors is an integer number (51315852).

Almost surely, 2^205155233 is an apocalyptic number.

It is an amenable number.

205155233 is a deficient number, since it is larger than the sum of its proper divisors (108175).

205155233 is a wasteful number, since it uses less digits than its factorization.

205155233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108174.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 205155233 is about 14323.2410089337. The cubic root of 205155233 is about 589.7856474994.

The spelling of 205155233 in words is "two hundred five million, one hundred fifty-five thousand, two hundred thirty-three".