545270281 has 2 divisors, whose sum is σ = 545270282. Its totient is φ = 545270280.

The previous prime is 545270279. The next prime is 545270287. The reversal of 545270281 is 182072545.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343175625 + 202094656 = 18525^2 + 14216^2 .

It is a cyclic number.

It is not a de Polignac number, because 545270281 - 2¹ = 545270279 is a prime.

It is a super-2 number, since 2×545270281² = 594639358683637922, which contains 22 as substring.

Together with 545270279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (545270287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272635140 + 272635141.

It is an arithmetic number, because the mean of its divisors is an integer number (272635141).

Almost surely, 2^545270281 is an apocalyptic number.

It is an amenable number.

545270281 is a deficient number, since it is larger than the sum of its proper divisors (1).

545270281 is an equidigital number, since it uses as much as digits as its factorization.

545270281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 545270281 is about 23351.0231253365. The cubic root of 545270281 is about 816.9659246090.

The spelling of 545270281 in words is "five hundred forty-five million, two hundred seventy thousand, two hundred eighty-one".