2780002553 has 4 divisors (see below), whose sum is σ = 2875864740. Its totient is φ = 2684140368.

The previous prime is 2780002549. The next prime is 2780002559. The reversal of 2780002553 is 3552000872.

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 2357782249 + 422220304 = 48557^2 + 20548^2 .

It is a cyclic number.

It is not a de Polignac number, because 2780002553 - 2² = 2780002549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2780002559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47931050 + ... + 47931107.

It is an arithmetic number, because the mean of its divisors is an integer number (718966185).

Almost surely, 2^2780002553 is an apocalyptic number.

It is an amenable number.

2780002553 is a deficient number, since it is larger than the sum of its proper divisors (95862187).

2780002553 is an equidigital number, since it uses as much as digits as its factorization.

2780002553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95862186.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 2780002553 is about 52725.7295160532. The cubic root of 2780002553 is about 1406.0962983077.

The spelling of 2780002553 in words is "two billion, seven hundred eighty million, two thousand, five hundred fifty-three".