2778453 has 12 divisors (see below), whose sum is σ = 4069260. Its totient is φ = 1826496.

The previous prime is 2778439. The next prime is 2778467. The reversal of 2778453 is 3548772.

2778453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2778439) and next prime (2778467).

It can be written as a sum of positive squares in 2 ways, for example, as 2377764 + 400689 = 1542^2 + 633^2 .

It is not a de Polignac number, because 2778453 - 2⁵ = 2778421 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 (2778353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1458 + ... + 2771.

It is an arithmetic number, because the mean of its divisors is an integer number (339105).

2^2778453 is an apocalyptic number.

It is an amenable number.

2778453 is a deficient number, since it is larger than the sum of its proper divisors (1290807).

2778453 is a wasteful number, since it uses less digits than its factorization.

2778453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4308 (or 4305 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 2778453 is about 1666.8692210249. The cubic root of 2778453 is about 140.5835000504.

The spelling of 2778453 in words is "two million, seven hundred seventy-eight thousand, four hundred fifty-three".