205452213 has 4 divisors (see below), whose sum is σ = 273936288. Its totient is φ = 136968140.

The previous prime is 205452197. The next prime is 205452223. The reversal of 205452213 is 312254502.

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 205452213 - 2⁴ = 205452197 is a prime.

It is a super-2 number, since 2×205452213² = 84421223653194738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205452223) 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, 34242033 + ... + 34242038.

It is an arithmetic number, because the mean of its divisors is an integer number (68484072).

Almost surely, 2^205452213 is an apocalyptic number.

It is an amenable number.

205452213 is a deficient number, since it is larger than the sum of its proper divisors (68484075).

205452213 is an equidigital number, since it uses as much as digits as its factorization.

205452213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68484074.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 205452213 is about 14333.6043268956. The cubic root of 205452213 is about 590.0700989200.

The spelling of 205452213 in words is "two hundred five million, four hundred fifty-two thousand, two hundred thirteen".