275420443 has 2 divisors, whose sum is σ = 275420444. Its totient is φ = 275420442.

The previous prime is 275420413. The next prime is 275420449. The reversal of 275420443 is 344024572.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-275420443 is a prime.

It is not a weakly prime, because it can be changed into another prime (275420449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137710221 + 137710222.

It is an arithmetic number, because the mean of its divisors is an integer number (137710222).

Almost surely, 2^275420443 is an apocalyptic number.

275420443 is a deficient number, since it is larger than the sum of its proper divisors (1).

275420443 is an equidigital number, since it uses as much as digits as its factorization.

275420443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 275420443 is about 16595.7959435515. The cubic root of 275420443 is about 650.6269635039.

The spelling of 275420443 in words is "two hundred seventy-five million, four hundred twenty thousand, four hundred forty-three".