2005140523 has 2 divisors, whose sum is σ = 2005140524. Its totient is φ = 2005140522.

The previous prime is 2005140521. The next prime is 2005140563. The reversal of 2005140523 is 3250415002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2005140523 - 2¹ = 2005140521 is a prime.

Together with 2005140521, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2005140494 and 2005140503.

It is not a weakly prime, because it can be changed into another prime (2005140521) 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 as a sum of consecutive naturals, namely, 1002570261 + 1002570262.

It is an arithmetic number, because the mean of its divisors is an integer number (1002570262).

Almost surely, 2^2005140523 is an apocalyptic number.

2005140523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005140523 is an equidigital number, since it uses as much as digits as its factorization.

2005140523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2005140523 is about 44778.7954616915. The cubic root of 2005140523 is about 1260.9995685861. Note that the first 3 decimals are identical.

Adding to 2005140523 its reverse (3250415002), we get a palindrome (5255555525).

The spelling of 2005140523 in words is "two billion, five million, one hundred forty thousand, five hundred twenty-three".