2154004145 has 16 divisors (see below), whose sum is σ = 2675574720. Its totient is φ = 1662763200.

The previous prime is 2154004067. The next prime is 2154004169. The reversal of 2154004145 is 5414004512.

It is not a de Polignac number, because 2154004145 - 2²² = 2149809841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305510 + ... + 312480.

It is an arithmetic number, because the mean of its divisors is an integer number (167223420).

Almost surely, 2^2154004145 is an apocalyptic number.

It is an amenable number.

2154004145 is a deficient number, since it is larger than the sum of its proper divisors (521570575).

2154004145 is a wasteful number, since it uses less digits than its factorization.

2154004145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9136.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2154004145 is about 46411.2501986318. The cubic root of 2154004145 is about 1291.4636242946.

Adding to 2154004145 its reverse (5414004512), we get a palindrome (7568008657).

The spelling of 2154004145 in words is "two billion, one hundred fifty-four million, four thousand, one hundred forty-five".