4005505451 has 4 divisors (see below), whose sum is σ = 4037044992. Its totient is φ = 3973965912.

The previous prime is 4005505417. The next prime is 4005505459. The reversal of 4005505451 is 1545055004.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4005505451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4005505459) 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, 15769580 + ... + 15769833.

It is an arithmetic number, because the mean of its divisors is an integer number (1009261248).

Almost surely, 2^4005505451 is an apocalyptic number.

4005505451 is a deficient number, since it is larger than the sum of its proper divisors (31539541).

4005505451 is a wasteful number, since it uses less digits than its factorization.

4005505451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31539540.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 4005505451 is about 63289.0626490865. The cubic root of 4005505451 is about 1588.1289979901.

The spelling of 4005505451 in words is "four billion, five million, five hundred five thousand, four hundred fifty-one".