545382281 has 2 divisors, whose sum is σ = 545382282. Its totient is φ = 545382280.

The previous prime is 545382241. The next prime is 545382283. The reversal of 545382281 is 182283545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 522533881 + 22848400 = 22859^2 + 4780^2 .

It is a cyclic number.

It is not a de Polignac number, because 545382281 - 2⁶ = 545382217 is a prime.

It is a super-2 number, since 2×545382281² = 594883664857525922, which contains 22 as substring.

Together with 545382283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (545382283) 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, 272691140 + 272691141.

It is an arithmetic number, because the mean of its divisors is an integer number (272691141).

Almost surely, 2^545382281 is an apocalyptic number.

It is an amenable number.

545382281 is a deficient number, since it is larger than the sum of its proper divisors (1).

545382281 is an equidigital number, since it uses as much as digits as its factorization.

545382281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76800, while the sum is 38.

The square root of 545382281 is about 23353.4211840578. The cubic root of 545382281 is about 817.0218564546.

The spelling of 545382281 in words is "five hundred forty-five million, three hundred eighty-two thousand, two hundred eighty-one".