2557760505 has 16 divisors (see below), whose sum is σ = 4134609024. Its totient is φ = 1350074880.

The previous prime is 2557760503. The next prime is 2557760521. The reversal of 2557760505 is 5050677552.

It is not a de Polignac number, because 2557760505 - 2¹ = 2557760503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2557760501) 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 15 ways as a sum of consecutive naturals, for example, 877501 + ... + 880410.

It is an arithmetic number, because the mean of its divisors is an integer number (258413064).

Almost surely, 2^2557760505 is an apocalyptic number.

It is an amenable number.

2557760505 is a deficient number, since it is larger than the sum of its proper divisors (1576848519).

2557760505 is a wasteful number, since it uses less digits than its factorization.

2557760505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758016.

The product of its (nonzero) digits is 367500, while the sum is 42.

The square root of 2557760505 is about 50574.3067673695. The cubic root of 2557760505 is about 1367.5817365282.

The spelling of 2557760505 in words is "two billion, five hundred fifty-seven million, seven hundred sixty thousand, five hundred five".