2555356391 has 4 divisors (see below), whose sum is σ = 2920407312. Its totient is φ = 2190305472.

The previous prime is 2555356369. The next prime is 2555356403. The reversal of 2555356391 is 1936535552.

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

It is a cyclic number.

It is not a de Polignac number, because 2555356391 - 2²² = 2551162087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555356591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182525450 + ... + 182525463.

It is an arithmetic number, because the mean of its divisors is an integer number (730101828).

Almost surely, 2^2555356391 is an apocalyptic number.

2555356391 is a deficient number, since it is larger than the sum of its proper divisors (365050921).

2555356391 is an equidigital number, since it uses as much as digits as its factorization.

2555356391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365050920.

The product of its digits is 607500, while the sum is 44.

The square root of 2555356391 is about 50550.5330436782. The cubic root of 2555356391 is about 1367.1531255047.

The spelling of 2555356391 in words is "two billion, five hundred fifty-five million, three hundred fifty-six thousand, three hundred ninety-one".