2005043401 has 4 divisors (see below), whose sum is σ = 2006768592. Its totient is φ = 2003318212.

The previous prime is 2005043347. The next prime is 2005043413. The reversal of 2005043401 is 1043405002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1043405002 = 2 ⋅521702501.

It is a cyclic number.

It is not a de Polignac number, because 2005043401 - 2²⁵ = 1971488969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005044401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860851 + ... + 863176.

It is an arithmetic number, because the mean of its divisors is an integer number (501692148).

Almost surely, 2^2005043401 is an apocalyptic number.

It is an amenable number.

2005043401 is a deficient number, since it is larger than the sum of its proper divisors (1725191).

2005043401 is a wasteful number, since it uses less digits than its factorization.

2005043401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725190.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2005043401 is about 44777.7109843726. The cubic root of 2005043401 is about 1260.9792087866.

Adding to 2005043401 its reverse (1043405002), we get a palindrome (3048448403).

The spelling of 2005043401 in words is "two billion, five million, forty-three thousand, four hundred one".