2566521055 has 8 divisors (see below), whose sum is σ = 3519800352. Its totient is φ = 1759900128.

The previous prime is 2566521047. The next prime is 2566521071. The reversal of 2566521055 is 5501256652.

2566521055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2566521055 - 2³ = 2566521047 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 36664552 + ... + 36664621.

It is an arithmetic number, because the mean of its divisors is an integer number (439975044).

Almost surely, 2^2566521055 is an apocalyptic number.

2566521055 is a deficient number, since it is larger than the sum of its proper divisors (953279297).

2566521055 is an equidigital number, since it uses as much as digits as its factorization.

2566521055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73329185.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 2566521055 is about 50660.8434098762. The cubic root of 2566521055 is about 1369.1413190535.

The spelling of 2566521055 in words is "two billion, five hundred sixty-six million, five hundred twenty-one thousand, fifty-five".