2245021155 has 24 divisors (see below), whose sum is σ = 4190707248. Its totient is φ = 1105240896.

The previous prime is 2245021127. The next prime is 2245021159. The reversal of 2245021155 is 5511205422.

2245021155 is a `hidden beast` number, since 2 + 2 + 4 + 502 + 1 + 155 = 666.

It is not a de Polignac number, because 2245021155 - 2⁹ = 2245020643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2245021159) 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, 1918237 + ... + 1919406.

It is an arithmetic number, because the mean of its divisors is an integer number (174612802).

Almost surely, 2^2245021155 is an apocalyptic number.

2245021155 is a deficient number, since it is larger than the sum of its proper divisors (1945686093).

2245021155 is a wasteful number, since it uses less digits than its factorization.

2245021155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3837667 (or 3837664 counting only the distinct ones).

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

The square root of 2245021155 is about 47381.6542028663. The cubic root of 2245021155 is about 1309.4034451397.

Adding to 2245021155 its reverse (5511205422), we get a palindrome (7756226577).

The spelling of 2245021155 in words is "two billion, two hundred forty-five million, twenty-one thousand, one hundred fifty-five".