2781254105 has 24 divisors (see below), whose sum is σ = 4025627712. Its totient is φ = 1806761376.

The previous prime is 2781254087. The next prime is 2781254107. The reversal of 2781254105 is 5014521872.

2781254105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2781254105 - 2²⁰ = 2780205529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2781254107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97427 + ... + 122696.

It is an arithmetic number, because the mean of its divisors is an integer number (167734488).

Almost surely, 2^2781254105 is an apocalyptic number.

It is an amenable number.

2781254105 is a deficient number, since it is larger than the sum of its proper divisors (1244373607).

2781254105 is a wasteful number, since it uses less digits than its factorization.

2781254105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220173 (or 220154 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 2781254105 is about 52737.5966934406. The cubic root of 2781254105 is about 1406.3072739669.

Adding to 2781254105 its reverse (5014521872), we get a palindrome (7795775977).

The spelling of 2781254105 in words is "two billion, seven hundred eighty-one million, two hundred fifty-four thousand, one hundred five".