205152543 has 12 divisors (see below), whose sum is σ = 296485488. Its totient is φ = 136697280.

The previous prime is 205152533. The next prime is 205152547. The reversal of 205152543 is 345251502.

It is a happy number.

205152543 is a `hidden beast` number, since 20 + 51 + 52 + 543 = 666.

205152543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205152543 - 2²² = 200958239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205152547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17038 + ... + 26468.

It is an arithmetic number, because the mean of its divisors is an integer number (24707124).

Almost surely, 2^205152543 is an apocalyptic number.

205152543 is a deficient number, since it is larger than the sum of its proper divisors (91332945).

205152543 is a wasteful number, since it uses less digits than its factorization.

205152543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11854 (or 11851 counting only the distinct ones).

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

The square root of 205152543 is about 14323.1471052978. The cubic root of 205152543 is about 589.7830697273.

The spelling of 205152543 in words is "two hundred five million, one hundred fifty-two thousand, five hundred forty-three".