2005452243 has 32 divisors (see below), whose sum is σ = 3160869120. Its totient is φ = 1252298880.

The previous prime is 2005452233. The next prime is 2005452247. The reversal of 2005452243 is 3422545002.

It is a happy number.

2005452243 is a `hidden beast` number, since 200 + 5 + 452 + 2 + 4 + 3 = 666.

It is not a de Polignac number, because 2005452243 - 2²⁴ = 1988675027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2005452247) 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 31 ways as a sum of consecutive naturals, for example, 86496 + ... + 107202.

It is an arithmetic number, because the mean of its divisors is an integer number (98777160).

Almost surely, 2^2005452243 is an apocalyptic number.

2005452243 is a deficient number, since it is larger than the sum of its proper divisors (1155416877).

2005452243 is a wasteful number, since it uses less digits than its factorization.

2005452243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20944 (or 20938 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 2005452243 is about 44782.2759917358. The cubic root of 2005452243 is about 1261.0649103770.

Adding to 2005452243 its reverse (3422545002), we get a palindrome (5427997245).

The spelling of 2005452243 in words is "two billion, five million, four hundred fifty-two thousand, two hundred forty-three".