2155440255 has 8 divisors (see below), whose sum is σ = 3448704432. Its totient is φ = 1149568128.

The previous prime is 2155440253. The next prime is 2155440269. The reversal of 2155440255 is 5520445512.

2155440255 is digitally balanced in base 2 and base 4, because in such bases 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 2155440255 - 2¹ = 2155440253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155440253) 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, 71847994 + ... + 71848023.

It is an arithmetic number, because the mean of its divisors is an integer number (431088054).

Almost surely, 2^2155440255 is an apocalyptic number.

2155440255 is a deficient number, since it is larger than the sum of its proper divisors (1293264177).

2155440255 is a wasteful number, since it uses less digits than its factorization.

2155440255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143696025.

The product of its (nonzero) digits is 40000, while the sum is 33.

The square root of 2155440255 is about 46426.7191927235. The cubic root of 2155440255 is about 1291.7505738809.

Adding to 2155440255 its reverse (5520445512), we get a palindrome (7675885767).

The spelling of 2155440255 in words is "two billion, one hundred fifty-five million, four hundred forty thousand, two hundred fifty-five".