2553777897 has 36 divisors (see below), whose sum is σ = 3928865904. Its totient is φ = 1463117040.

The previous prime is 2553777847. The next prime is 2553777899. The reversal of 2553777897 is 7987773552.

It is a happy number.

It is not a de Polignac number, because 2553777897 - 2⁶ = 2553777833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2553777897.

It is not an unprimeable number, because it can be changed into a prime (2553777899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5515488 + ... + 5515950.

It is an arithmetic number, because the mean of its divisors is an integer number (109135164).

Almost surely, 2^2553777897 is an apocalyptic number.

It is an amenable number.

2553777897 is a deficient number, since it is larger than the sum of its proper divisors (1375088007).

2553777897 is an equidigital number, since it uses as much as digits as its factorization.

2553777897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978 (or 496 counting only the distinct ones).

The product of its digits is 25930800, while the sum is 60.

The square root of 2553777897 is about 50534.9176015950. The cubic root of 2553777897 is about 1366.8715617117.

The spelling of 2553777897 in words is "two billion, five hundred fifty-three million, seven hundred seventy-seven thousand, eight hundred ninety-seven".