2553660881 has 2 divisors, whose sum is σ = 2553660882. Its totient is φ = 2553660880.

The previous prime is 2553660839. The next prime is 2553660883. The reversal of 2553660881 is 1880663552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2422214656 + 131446225 = 49216^2 + 11465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2553660881 - 2³⁰ = 1479919057 is a prime.

It is a super-2 number, since 2×2553660881² = 13042367790299392322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2553660883, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2553660883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276830440 + 1276830441.

It is an arithmetic number, because the mean of its divisors is an integer number (1276830441).

Almost surely, 2^2553660881 is an apocalyptic number.

It is an amenable number.

2553660881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2553660881 is an equidigital number, since it uses as much as digits as its factorization.

2553660881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 2553660881 is about 50533.7598146031. The cubic root of 2553660881 is about 1366.8506843694.

The spelling of 2553660881 in words is "two billion, five hundred fifty-three million, six hundred sixty thousand, eight hundred eighty-one".