2255121045 has 24 divisors (see below), whose sum is σ = 3929144856. Its totient is φ = 1196494848.

The previous prime is 2255121007. The next prime is 2255121047. The reversal of 2255121045 is 5401215522.

2255121045 is a `hidden beast` number, since 2 + 2 + 551 + 2 + 104 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 580183569 + 1674937476 = 24087^2 + 40926^2 .

It is not a de Polignac number, because 2255121045 - 2¹¹ = 2255118997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255121047) 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, 121144 + ... + 138513.

It is an arithmetic number, because the mean of its divisors is an integer number (163714369).

Almost surely, 2^2255121045 is an apocalyptic number.

It is an amenable number.

2255121045 is a deficient number, since it is larger than the sum of its proper divisors (1674023811).

2255121045 is a wasteful number, since it uses less digits than its factorization.

2255121045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259861 (or 259858 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 2255121045 is about 47488.1147762259. The cubic root of 2255121045 is about 1311.3640871314.

Adding to 2255121045 its reverse (5401215522), we get a palindrome (7656336567).

The spelling of 2255121045 in words is "two billion, two hundred fifty-five million, one hundred twenty-one thousand, forty-five".