205211053 has 2 divisors, whose sum is σ = 205211054. Its totient is φ = 205211052.

The previous prime is 205211033. The next prime is 205211057. The reversal of 205211053 is 350112502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163763209 + 41447844 = 12797^2 + 6438^2 .

It is a cyclic number.

It is not a de Polignac number, because 205211053 - 2⁵ = 205211021 is a prime.

It is a super-2 number, since 2×205211053² = 84223152546737618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205211053.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205211057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102605526 + 102605527.

It is an arithmetic number, because the mean of its divisors is an integer number (102605527).

Almost surely, 2^205211053 is an apocalyptic number.

It is an amenable number.

205211053 is a deficient number, since it is larger than the sum of its proper divisors (1).

205211053 is an equidigital number, since it uses as much as digits as its factorization.

205211053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 205211053 is about 14325.1894577349. The cubic root of 205211053 is about 589.8391335824.

Adding to 205211053 its reverse (350112502), we get a palindrome (555323555).

The spelling of 205211053 in words is "two hundred five million, two hundred eleven thousand, fifty-three".