205456133 has 4 divisors (see below), whose sum is σ = 205487040. Its totient is φ = 205425228.

The previous prime is 205456123. The next prime is 205456201. The reversal of 205456133 is 331654502.

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, and also an emirpimes, since its reverse is a distinct semiprime: 331654502 = 2 ⋅165827251.

It is a cyclic number.

It is not a de Polignac number, because 205456133 - 2¹⁶ = 205390597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205456096 and 205456105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205456123) 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, 935 + ... + 20292.

It is an arithmetic number, because the mean of its divisors is an integer number (51371760).

Almost surely, 2^205456133 is an apocalyptic number.

It is an amenable number.

205456133 is a deficient number, since it is larger than the sum of its proper divisors (30907).

205456133 is an equidigital number, since it uses as much as digits as its factorization.

205456133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30906.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 205456133 is about 14333.7410678441. The cubic root of 205456133 is about 590.0738517149.

The spelling of 205456133 in words is "two hundred five million, four hundred fifty-six thousand, one hundred thirty-three".