205530151 has 2 divisors, whose sum is σ = 205530152. Its totient is φ = 205530150.

The previous prime is 205530137. The next prime is 205530173. The reversal of 205530151 is 151035502.

It is an a-pointer prime, because the next prime (205530173) can be obtained adding 205530151 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205530151 - 2¹⁷ = 205399079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205530121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102765075 + 102765076.

It is an arithmetic number, because the mean of its divisors is an integer number (102765076).

Almost surely, 2^205530151 is an apocalyptic number.

205530151 is a deficient number, since it is larger than the sum of its proper divisors (1).

205530151 is an equidigital number, since it uses as much as digits as its factorization.

205530151 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 205530151 is about 14336.3227851496. The cubic root of 205530151 is about 590.1447035667.

Adding to 205530151 its reverse (151035502), we get a palindrome (356565653).

The spelling of 205530151 in words is "two hundred five million, five hundred thirty thousand, one hundred fifty-one".