2555349581 has 2 divisors, whose sum is σ = 2555349582. Its totient is φ = 2555349580.

The previous prime is 2555349571. The next prime is 2555349583. The reversal of 2555349581 is 1859435552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1335244681 + 1220104900 = 36541^2 + 34930^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555349581 - 2¹⁴ = 2555333197 is a prime.

It is a super-2 number, since 2×2555349581² = 13059622962233751122, which contains 22 as substring.

Together with 2555349583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555349583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277674790 + 1277674791.

It is an arithmetic number, because the mean of its divisors is an integer number (1277674791).

Almost surely, 2^2555349581 is an apocalyptic number.

It is an amenable number.

2555349581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555349581 is an equidigital number, since it uses as much as digits as its factorization.

2555349581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080000, while the sum is 47.

The square root of 2555349581 is about 50550.4656852931. The cubic root of 2555349581 is about 1367.1519110203.

The spelling of 2555349581 in words is "two billion, five hundred fifty-five million, three hundred forty-nine thousand, five hundred eighty-one".