205552313 has 4 divisors (see below), whose sum is σ = 208447488. Its totient is φ = 202657140.

The previous prime is 205552301. The next prime is 205552327. The reversal of 205552313 is 313255502.

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 205552313 - 2⁴ = 205552297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (205552213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1447481 + ... + 1447622.

It is an arithmetic number, because the mean of its divisors is an integer number (52111872).

Almost surely, 2^205552313 is an apocalyptic number.

205552313 is the 7664-th centered heptagonal number.

It is an amenable number.

205552313 is a deficient number, since it is larger than the sum of its proper divisors (2895175).

205552313 is an equidigital number, since it uses as much as digits as its factorization.

205552313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895174.

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

The square root of 205552313 is about 14337.0956961304. The cubic root of 205552313 is about 590.1659142695.

The spelling of 205552313 in words is "two hundred five million, five hundred fifty-two thousand, three hundred thirteen".