545423717 has 2 divisors, whose sum is σ = 545423718. Its totient is φ = 545423716.

The previous prime is 545423713. The next prime is 545423719. The reversal of 545423717 is 717324545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 541911841 + 3511876 = 23279^2 + 1874^2 .

It is a cyclic number.

It is not a de Polignac number, because 545423717 - 2² = 545423713 is a prime.

Together with 545423719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545423713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272711858 + 272711859.

It is an arithmetic number, because the mean of its divisors is an integer number (272711859).

Almost surely, 2^545423717 is an apocalyptic number.

It is an amenable number.

545423717 is a deficient number, since it is larger than the sum of its proper divisors (1).

545423717 is an equidigital number, since it uses as much as digits as its factorization.

545423717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 38.

The square root of 545423717 is about 23354.3083177387. The cubic root of 545423717 is about 817.0425472994.

The spelling of 545423717 in words is "five hundred forty-five million, four hundred twenty-three thousand, seven hundred seventeen".