2556457026 has 16 divisors (see below), whose sum is σ = 5113432128. Its totient is φ = 852066000.

The previous prime is 2556456997. The next prime is 2556457063. The reversal of 2556457026 is 6207546552.

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, 77676 + ... + 105576.

It is an arithmetic number, because the mean of its divisors is an integer number (319589508).

Almost surely, 2^2556457026 is an apocalyptic number.

2556457026 is an abundant number, since it is smaller than the sum of its proper divisors (2556975102).

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

2556457026 is a wasteful number, since it uses less digits than its factorization.

2556457026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43177.

The product of its (nonzero) digits is 504000, while the sum is 42.

The square root of 2556457026 is about 50561.4183543144. The cubic root of 2556457026 is about 1367.3493826163.

The spelling of 2556457026 in words is "two billion, five hundred fifty-six million, four hundred fifty-seven thousand, twenty-six".