2005315447 has 2 divisors, whose sum is σ = 2005315448. Its totient is φ = 2005315446.

The previous prime is 2005315397. The next prime is 2005315469. The reversal of 2005315447 is 7445135002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2005315447 - 2¹⁵ = 2005282679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005315747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002657723 + 1002657724.

It is an arithmetic number, because the mean of its divisors is an integer number (1002657724).

Almost surely, 2^2005315447 is an apocalyptic number.

2005315447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005315447 is an equidigital number, since it uses as much as digits as its factorization.

2005315447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 2005315447 is about 44780.7486203614. The cubic root of 2005315447 is about 1261.0362364526.

The spelling of 2005315447 in words is "two billion, five million, three hundred fifteen thousand, four hundred forty-seven".