205534051 has 2 divisors, whose sum is σ = 205534052. Its totient is φ = 205534050.

The previous prime is 205534037. The next prime is 205534057. The reversal of 205534051 is 150435502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205534051 - 2⁹ = 205533539 is a prime.

It is a super-2 number, since 2×205534051² = 84488492240941202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (205534057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102767025 + 102767026.

It is an arithmetic number, because the mean of its divisors is an integer number (102767026).

Almost surely, 2^205534051 is an apocalyptic number.

205534051 is a deficient number, since it is larger than the sum of its proper divisors (1).

205534051 is an equidigital number, since it uses as much as digits as its factorization.

205534051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 205534051 is about 14336.4588026472. The cubic root of 205534051 is about 590.1484362709.

Adding to 205534051 its reverse (150435502), we get a palindrome (355969553).

The spelling of 205534051 in words is "two hundred five million, five hundred thirty-four thousand, fifty-one".