205003151 has 4 divisors (see below), whose sum is σ = 206148600. Its totient is φ = 203857704.

The previous prime is 205003121. The next prime is 205003171. The reversal of 205003151 is 151300502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205003151 - 2¹⁸ = 204741007 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205003121) 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 in 3 ways as a sum of consecutive naturals, for example, 572456 + ... + 572813.

It is an arithmetic number, because the mean of its divisors is an integer number (51537150).

Almost surely, 2^205003151 is an apocalyptic number.

205003151 is a deficient number, since it is larger than the sum of its proper divisors (1145449).

205003151 is a wasteful number, since it uses less digits than its factorization.

205003151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145448.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 205003151 is about 14317.9311005466. The cubic root of 205003151 is about 589.6398750315.

Adding to 205003151 its reverse (151300502), we get a palindrome (356303653).

The spelling of 205003151 in words is "two hundred five million, three thousand, one hundred fifty-one".