205253451 has 12 divisors (see below), whose sum is σ = 319283328. Its totient is φ = 126309744.

The previous prime is 205253441. The next prime is 205253483. The reversal of 205253451 is 154352502.

It is a happy number.

205253451 is a `hidden beast` number, since 205 + 2 + 5 + 3 + 451 = 666.

It is not a de Polignac number, because 205253451 - 2¹⁰ = 205252427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205253441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 877035 + ... + 877268.

It is an arithmetic number, because the mean of its divisors is an integer number (26606944).

Almost surely, 2^205253451 is an apocalyptic number.

205253451 is a deficient number, since it is larger than the sum of its proper divisors (114029877).

205253451 is a wasteful number, since it uses less digits than its factorization.

205253451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754322 (or 1754319 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 205253451 is about 14326.6692221186. The cubic root of 205253451 is about 589.8797523781.

The spelling of 205253451 in words is "two hundred five million, two hundred fifty-three thousand, four hundred fifty-one".