2557783330 has 8 divisors (see below), whose sum is σ = 4604010012. Its totient is φ = 1023113328.

The previous prime is 2557783321. The next prime is 2557783343. The reversal of 2557783330 is 333877552.

It can be written as a sum of positive squares in 2 ways, for example, as 2521144521 + 36638809 = 50211^2 + 6053^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127889157 + ... + 127889176.

Almost surely, 2^2557783330 is an apocalyptic number.

2557783330 is a deficient number, since it is larger than the sum of its proper divisors (2046226682).

2557783330 is a wasteful number, since it uses less digits than its factorization.

2557783330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255778340.

The product of its (nonzero) digits is 529200, while the sum is 43.

The square root of 2557783330 is about 50574.5324249271. The cubic root of 2557783330 is about 1367.5858045349.

The spelling of 2557783330 in words is "two billion, five hundred fifty-seven million, seven hundred eighty-three thousand, three hundred thirty".