205213153 has 4 divisors (see below), whose sum is σ = 214135488. Its totient is φ = 196290820.

The previous prime is 205213133. The next prime is 205213181. The reversal of 205213153 is 351312502.

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 205213153 - 2⁵ = 205213121 is a prime.

It is a super-2 number, since 2×205213153² = 84224876328402818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205213123) 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, 4461133 + ... + 4461178.

It is an arithmetic number, because the mean of its divisors is an integer number (53533872).

Almost surely, 2^205213153 is an apocalyptic number.

205213153 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

205213153 is a deficient number, since it is larger than the sum of its proper divisors (8922335).

205213153 is an equidigital number, since it uses as much as digits as its factorization.

205213153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8922334.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 205213153 is about 14325.2627550073. The cubic root of 205213153 is about 589.8411455890.

Adding to 205213153 its reverse (351312502), we get a palindrome (556525655).

The spelling of 205213153 in words is "two hundred five million, two hundred thirteen thousand, one hundred fifty-three".