545246813 has 2 divisors, whose sum is σ = 545246814. Its totient is φ = 545246812.

The previous prime is 545246771. The next prime is 545246827. The reversal of 545246813 is 318642545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 502566724 + 42680089 = 22418^2 + 6533^2 .

It is a cyclic number.

It is not a de Polignac number, because 545246813 - 2²⁶ = 478137949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545246873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272623406 + 272623407.

It is an arithmetic number, because the mean of its divisors is an integer number (272623407).

Almost surely, 2^545246813 is an apocalyptic number.

It is an amenable number.

545246813 is a deficient number, since it is larger than the sum of its proper divisors (1).

545246813 is an equidigital number, since it uses as much as digits as its factorization.

545246813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 38.

The square root of 545246813 is about 23350.5206151812. The cubic root of 545246813 is about 816.9542039193.

The spelling of 545246813 in words is "five hundred forty-five million, two hundred forty-six thousand, eight hundred thirteen".