2154456005 has 16 divisors (see below), whose sum is σ = 2819470080. Its totient is φ = 1570840128.

The previous prime is 2154456001. The next prime is 2154456043. The reversal of 2154456005 is 5006544512.

It is not a de Polignac number, because 2154456005 - 2² = 2154456001 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154456001) 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 in 15 ways as a sum of consecutive naturals, for example, 204647 + ... + 214916.

It is an arithmetic number, because the mean of its divisors is an integer number (176216880).

Almost surely, 2^2154456005 is an apocalyptic number.

It is an amenable number.

2154456005 is a deficient number, since it is larger than the sum of its proper divisors (665014075).

2154456005 is a wasteful number, since it uses less digits than its factorization.

2154456005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419660.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 2154456005 is about 46416.1179440935. The cubic root of 2154456005 is about 1291.5539243301.

The spelling of 2154456005 in words is "two billion, one hundred fifty-four million, four hundred fifty-six thousand, five".