2154035545 has 4 divisors (see below), whose sum is σ = 2584842660. Its totient is φ = 1723228432.

The previous prime is 2154035531. The next prime is 2154035591. The reversal of 2154035545 is 5455304512.

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

It can be written as a sum of positive squares in 2 ways, for example, as 687068944 + 1466966601 = 26212^2 + 38301^2 .

It is a cyclic number.

It is not a de Polignac number, because 2154035545 - 2⁹ = 2154035033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2154035545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215403550 + ... + 215403559.

It is an arithmetic number, because the mean of its divisors is an integer number (646210665).

Almost surely, 2^2154035545 is an apocalyptic number.

It is an amenable number.

2154035545 is a deficient number, since it is larger than the sum of its proper divisors (430807115).

2154035545 is an equidigital number, since it uses as much as digits as its factorization.

2154035545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430807114.

The product of its (nonzero) digits is 60000, while the sum is 34.

The square root of 2154035545 is about 46411.5884774482. The cubic root of 2154035545 is about 1291.4698997020.

The spelling of 2154035545 in words is "two billion, one hundred fifty-four million, thirty-five thousand, five hundred forty-five".