545121013 has 2 divisors, whose sum is σ = 545121014. Its totient is φ = 545121012.

The previous prime is 545121007. The next prime is 545121041. The reversal of 545121013 is 310121545.

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., 479478609 + 65642404 = 21897^2 + 8102^2 .

It is a cyclic number.

It is not a de Polignac number, because 545121013 - 2⁵ = 545120981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545121043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272560506 + 272560507.

It is an arithmetic number, because the mean of its divisors is an integer number (272560507).

Almost surely, 2^545121013 is an apocalyptic number.

It is an amenable number.

545121013 is a deficient number, since it is larger than the sum of its proper divisors (1).

545121013 is an equidigital number, since it uses as much as digits as its factorization.

545121013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 545121013 is about 23347.8267296980. The cubic root of 545121013 is about 816.8913695347.

Adding to 545121013 its reverse (310121545), we get a palindrome (855242558).

The spelling of 545121013 in words is "five hundred forty-five million, one hundred twenty-one thousand, thirteen".