205150531 has 2 divisors, whose sum is σ = 205150532. Its totient is φ = 205150530.

The previous prime is 205150489. The next prime is 205150537. The reversal of 205150531 is 135051502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205150531 - 2⁷ = 205150403 is a prime.

It is a super-2 number, since 2×205150531² = 84173480739163922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (205150537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102575265 + 102575266.

It is an arithmetic number, because the mean of its divisors is an integer number (102575266).

Almost surely, 2^205150531 is an apocalyptic number.

205150531 is a deficient number, since it is larger than the sum of its proper divisors (1).

205150531 is an equidigital number, since it uses as much as digits as its factorization.

205150531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 205150531 is about 14323.0768691647. The cubic root of 205150531 is about 589.7811416540.

The spelling of 205150531 in words is "two hundred five million, one hundred fifty thousand, five hundred thirty-one".