545289247 has 2 divisors, whose sum is σ = 545289248. Its totient is φ = 545289246.

The previous prime is 545289193. The next prime is 545289259. The reversal of 545289247 is 742982545.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 545289247 - 2²⁷ = 411071519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 545289197 and 545289206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545280247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272644623 + 272644624.

It is an arithmetic number, because the mean of its divisors is an integer number (272644624).

Almost surely, 2^545289247 is an apocalyptic number.

545289247 is a deficient number, since it is larger than the sum of its proper divisors (1).

545289247 is an equidigital number, since it uses as much as digits as its factorization.

545289247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 806400, while the sum is 46.

The square root of 545289247 is about 23351.4292282079. The cubic root of 545289247 is about 816.9753966065.

The spelling of 545289247 in words is "five hundred forty-five million, two hundred eighty-nine thousand, two hundred forty-seven".