2555431155 has 24 divisors (see below), whose sum is σ = 4468621248. Its totient is φ = 1350832896.

The previous prime is 2555431117. The next prime is 2555431157. The reversal of 2555431155 is 5511345552.

2555431155 is a `hidden beast` number, since 2 + 55 + 543 + 11 + 55 = 666.

It is not a de Polignac number, because 2555431155 - 2⁷ = 2555431027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2555431157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246187 + ... + 256356.

It is an arithmetic number, because the mean of its divisors is an integer number (186192552).

Almost surely, 2^2555431155 is an apocalyptic number.

2555431155 is a deficient number, since it is larger than the sum of its proper divisors (1913190093).

2555431155 is a wasteful number, since it uses less digits than its factorization.

2555431155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502667 (or 502664 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 2555431155 is about 50551.2725359115. The cubic root of 2555431155 is about 1367.1664586533.

The spelling of 2555431155 in words is "two billion, five hundred fifty-five million, four hundred thirty-one thousand, one hundred fifty-five".