205523053 has 4 divisors (see below), whose sum is σ = 205616608. Its totient is φ = 205429500.

The previous prime is 205523051. The next prime is 205523063. The reversal of 205523053 is 350325502.

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 205523053 - 2¹ = 205523051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205523051) 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, 43401 + ... + 47902.

It is an arithmetic number, because the mean of its divisors is an integer number (51404152).

Almost surely, 2^205523053 is an apocalyptic number.

It is an amenable number.

205523053 is a deficient number, since it is larger than the sum of its proper divisors (93555).

205523053 is an equidigital number, since it uses as much as digits as its factorization.

205523053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93554.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 205523053 is about 14336.0752299923. The cubic root of 205523053 is about 590.1379099239.

Adding to 205523053 its reverse (350325502), we get a palindrome (555848555).

The spelling of 205523053 in words is "two hundred five million, five hundred twenty-three thousand, fifty-three".