2255121445 has 4 divisors (see below), whose sum is σ = 2706145740. Its totient is φ = 1804097152.

The previous prime is 2255121437. The next prime is 2255121469. The reversal of 2255121445 is 5441215522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 826735009 + 1428386436 = 28753^2 + 37794^2 .

It is a cyclic number.

It is not a de Polignac number, because 2255121445 - 2³ = 2255121437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225512140 + ... + 225512149.

It is an arithmetic number, because the mean of its divisors is an integer number (676536435).

Almost surely, 2^2255121445 is an apocalyptic number.

It is an amenable number.

2255121445 is a deficient number, since it is larger than the sum of its proper divisors (451024295).

2255121445 is an equidigital number, since it uses as much as digits as its factorization.

2255121445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451024294.

The product of its digits is 16000, while the sum is 31.

The square root of 2255121445 is about 47488.1189878058. The cubic root of 2255121445 is about 1311.3641646653.

Adding to 2255121445 its reverse (5441215522), we get a palindrome (7696336967).

The spelling of 2255121445 in words is "two billion, two hundred fifty-five million, one hundred twenty-one thousand, four hundred forty-five".