2255432821 has 2 divisors, whose sum is σ = 2255432822. Its totient is φ = 2255432820.

The previous prime is 2255432813. The next prime is 2255432843. The reversal of 2255432821 is 1282345522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1152263025 + 1103169796 = 33945^2 + 33214^2 .

It is a cyclic number.

It is not a de Polignac number, because 2255432821 - 2³ = 2255432813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2255432801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1127716410 + 1127716411.

It is an arithmetic number, because the mean of its divisors is an integer number (1127716411).

Almost surely, 2^2255432821 is an apocalyptic number.

It is an amenable number.

2255432821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2255432821 is an equidigital number, since it uses as much as digits as its factorization.

2255432821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 34.

The square root of 2255432821 is about 47491.3973367809. The cubic root of 2255432821 is about 1311.4245174440.

The spelling of 2255432821 in words is "two billion, two hundred fifty-five million, four hundred thirty-two thousand, eight hundred twenty-one".