2455920881 has 2 divisors, whose sum is σ = 2455920882. Its totient is φ = 2455920880.

The previous prime is 2455920851. The next prime is 2455920919. The reversal of 2455920881 is 1880295542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2160390400 + 295530481 = 46480^2 + 17191^2 .

It is a cyclic number.

It is not a de Polignac number, because 2455920881 - 2²⁶ = 2388812017 is a prime.

It is a super-2 number, since 2×2455920881² = 12063094747463632322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2455920811) 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, 1227960440 + 1227960441.

It is an arithmetic number, because the mean of its divisors is an integer number (1227960441).

Almost surely, 2^2455920881 is an apocalyptic number.

It is an amenable number.

2455920881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2455920881 is an equidigital number, since it uses as much as digits as its factorization.

2455920881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 230400, while the sum is 44.

The square root of 2455920881 is about 49557.2485212809. The cubic root of 2455920881 is about 1349.1848542237.

The spelling of 2455920881 in words is "two billion, four hundred fifty-five million, nine hundred twenty thousand, eight hundred eighty-one".