2154254591 has 2 divisors, whose sum is σ = 2154254592. Its totient is φ = 2154254590.

The previous prime is 2154254587. The next prime is 2154254611. The reversal of 2154254591 is 1954524512.

2154254591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2154254591 - 2² = 2154254587 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154254191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077127295 + 1077127296.

It is an arithmetic number, because the mean of its divisors is an integer number (1077127296).

Almost surely, 2^2154254591 is an apocalyptic number.

2154254591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154254591 is an equidigital number, since it uses as much as digits as its factorization.

2154254591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 38.

The square root of 2154254591 is about 46413.9482375719. The cubic root of 2154254591 is about 1291.5136751676.

The spelling of 2154254591 in words is "two billion, one hundred fifty-four million, two hundred fifty-four thousand, five hundred ninety-one".