545452009 has 2 divisors, whose sum is σ = 545452010. Its totient is φ = 545452008.

The previous prime is 545451997. The next prime is 545452027. The reversal of 545452009 is 900254545.

It is a happy number.

545452009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 537312400 + 8139609 = 23180^2 + 2853^2 .

It is a cyclic number.

It is not a de Polignac number, because 545452009 - 2¹³ = 545443817 is a prime.

It is equal to p_28619125 and since 545452009 and 28619125 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (545452079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272726004 + 272726005.

It is an arithmetic number, because the mean of its divisors is an integer number (272726005).

Almost surely, 2^545452009 is an apocalyptic number.

It is an amenable number.

545452009 is a deficient number, since it is larger than the sum of its proper divisors (1).

545452009 is an equidigital number, since it uses as much as digits as its factorization.

545452009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 545452009 is about 23354.9140225350. The cubic root of 545452009 is about 817.0566741561.

The spelling of 545452009 in words is "five hundred forty-five million, four hundred fifty-two thousand, nine".