2556512770 has 112 divisors (see below), whose sum is σ = 5603379768. Its totient is φ = 839005440.

The previous prime is 2556512741. The next prime is 2556512789. The reversal of 2556512770 is 772156552.

It can be written as a sum of positive squares in 4 ways, for example, as 1666027489 + 890485281 = 40817^2 + 29841^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 48236064 + ... + 48236116.

Almost surely, 2^2556512770 is an apocalyptic number.

2556512770 is an abundant number, since it is smaller than the sum of its proper divisors (3046866998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2556512770 is an frugal number, since it uses more digits than its factorization.

2556512770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 40.

The square root of 2556512770 is about 50561.9696016680. The cubic root of 2556512770 is about 1367.3593209762.

The spelling of 2556512770 in words is "two billion, five hundred fifty-six million, five hundred twelve thousand, seven hundred seventy".