2155481226 has 16 divisors (see below), whose sum is σ = 4789958400. Its totient is φ = 718493724.

The previous prime is 2155481219. The next prime is 2155481249. The reversal of 2155481226 is 6221845512.

2155481226 is a `hidden beast` number, since 2 + 1 + 554 + 81 + 2 + 26 = 666.

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, 19958106 + ... + 19958213.

It is an arithmetic number, because the mean of its divisors is an integer number (299372400).

Almost surely, 2^2155481226 is an apocalyptic number.

2155481226 is an abundant number, since it is smaller than the sum of its proper divisors (2634477174).

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

2155481226 is a wasteful number, since it uses less digits than its factorization.

2155481226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39916330 (or 39916324 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 2155481226 is about 46427.1604343837. The cubic root of 2155481226 is about 1291.7587584390.

The spelling of 2155481226 in words is "two billion, one hundred fifty-five million, four hundred eighty-one thousand, two hundred twenty-six".