2544155455 has 4 divisors (see below), whose sum is σ = 3052986552. Its totient is φ = 2035324360.

The previous prime is 2544155443. The next prime is 2544155521. The reversal of 2544155455 is 5545514452.

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

It is not a de Polignac number, because 2544155455 - 2¹¹ = 2544153407 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

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, 254415541 + ... + 254415550.

It is an arithmetic number, because the mean of its divisors is an integer number (763246638).

Almost surely, 2^2544155455 is an apocalyptic number.

2544155455 is a deficient number, since it is larger than the sum of its proper divisors (508831097).

2544155455 is an equidigital number, since it uses as much as digits as its factorization.

2544155455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508831096.

The product of its digits is 400000, while the sum is 40.

The square root of 2544155455 is about 50439.6218760609. The cubic root of 2544155455 is about 1365.1526447568.

The spelling of 2544155455 in words is "two billion, five hundred forty-four million, one hundred fifty-five thousand, four hundred fifty-five".