2755238891 has 2 divisors, whose sum is σ = 2755238892. Its totient is φ = 2755238890.

The previous prime is 2755238821. The next prime is 2755238897. The reversal of 2755238891 is 1988325572.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2755238891 is a prime.

It is not a weakly prime, because it can be changed into another prime (2755238897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1377619445 + 1377619446.

It is an arithmetic number, because the mean of its divisors is an integer number (1377619446).

Almost surely, 2^2755238891 is an apocalyptic number.

2755238891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2755238891 is an equidigital number, since it uses as much as digits as its factorization.

2755238891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 50.

The square root of 2755238891 is about 52490.3695071772. The cubic root of 2755238891 is about 1401.9087724005.

The spelling of 2755238891 in words is "two billion, seven hundred fifty-five million, two hundred thirty-eight thousand, eight hundred ninety-one".