2558278056 has 32 divisors (see below), whose sum is σ = 6531776640. Its totient is φ = 834615168.

The previous prime is 2558278049. The next prime is 2558278061. The reversal of 2558278056 is 6508728552.

It is a super-2 number, since 2×2558278056² = 13089573223622278272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2558277996 and 2558278014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1132861 + ... + 1135116.

It is an arithmetic number, because the mean of its divisors is an integer number (204118020).

Almost surely, 2^2558278056 is an apocalyptic number.

It is an amenable number.

2558278056 is an abundant number, since it is smaller than the sum of its proper divisors (3973498584).

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

2558278056 is a wasteful number, since it uses less digits than its factorization.

2558278056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268033 (or 2268029 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 48.

The square root of 2558278056 is about 50579.4232470083. The cubic root of 2558278056 is about 1367.6739715856.

The spelling of 2558278056 in words is "two billion, five hundred fifty-eight million, two hundred seventy-eight thousand, fifty-six".