545137009 has 2 divisors, whose sum is σ = 545137010. Its totient is φ = 545137008.

The previous prime is 545137003. The next prime is 545137031. The reversal of 545137009 is 900731545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 472410225 + 72726784 = 21735^2 + 8528^2 .

It is a cyclic number.

It is not a de Polignac number, because 545137009 - 2⁹ = 545136497 is a prime.

It is not a weakly prime, because it can be changed into another prime (545137003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272568504 + 272568505.

It is an arithmetic number, because the mean of its divisors is an integer number (272568505).

Almost surely, 2^545137009 is an apocalyptic number.

It is an amenable number.

545137009 is a deficient number, since it is larger than the sum of its proper divisors (1).

545137009 is an equidigital number, since it uses as much as digits as its factorization.

545137009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 545137009 is about 23348.1692858348. The cubic root of 545137009 is about 816.8993597279.

The spelling of 545137009 in words is "five hundred forty-five million, one hundred thirty-seven thousand, nine".