2555605855 has 8 divisors (see below), whose sum is σ = 3345520464. Its totient is φ = 1858622400.

The previous prime is 2555605841. The next prime is 2555605859. The reversal of 2555605855 is 5585065552.

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

It is not a de Polignac number, because 2555605855 - 2⁹ = 2555605343 is a prime.

It is a super-2 number, since 2×2555605855² = 13062242572220562050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555605859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23232726 + ... + 23232835.

It is an arithmetic number, because the mean of its divisors is an integer number (418190058).

Almost surely, 2^2555605855 is an apocalyptic number.

2555605855 is a deficient number, since it is larger than the sum of its proper divisors (789914609).

2555605855 is a wasteful number, since it uses less digits than its factorization.

2555605855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46465577.

The product of its (nonzero) digits is 1500000, while the sum is 46.

The square root of 2555605855 is about 50553.0004549681. Note that the first 3 decimals coincide. The cubic root of 2555605855 is about 1367.1976130226.

Subtracting from 2555605855 its sum of digits (46), we obtain a square (2555605809 = 50553²).

The spelling of 2555605855 in words is "two billion, five hundred fifty-five million, six hundred five thousand, eight hundred fifty-five".