2553643291 has 2 divisors, whose sum is σ = 2553643292. Its totient is φ = 2553643290.

The previous prime is 2553643289. The next prime is 2553643331. The reversal of 2553643291 is 1923463552.

2553643291 = T₄₁₂₅₉ + T₄₁₂₆₀ + T₄₁₂₆₁.

It is an a-pointer prime, because the next prime (2553643331) can be obtained adding 2553643291 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2553643291 - 2¹ = 2553643289 is a prime.

Together with 2553643289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2553643201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276821645 + 1276821646.

It is an arithmetic number, because the mean of its divisors is an integer number (1276821646).

Almost surely, 2^2553643291 is an apocalyptic number.

2553643291 is the 41261-st centered triangular number.

2553643291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2553643291 is an equidigital number, since it uses as much as digits as its factorization.

2553643291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 40.

The square root of 2553643291 is about 50533.5857722367. The cubic root of 2553643291 is about 1366.8475460046.

The spelling of 2553643291 in words is "two billion, five hundred fifty-three million, six hundred forty-three thousand, two hundred ninety-one".