45037009 has 2 divisors, whose sum is σ = 45037010. Its totient is φ = 45037008.

The previous prime is 45037007. The next prime is 45037021. The reversal of 45037009 is 90073054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38130625 + 6906384 = 6175^2 + 2628^2 .

It is a cyclic number.

It is not a de Polignac number, because 45037009 - 2¹ = 45037007 is a prime.

Together with 45037007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45037007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22518504 + 22518505.

It is an arithmetic number, because the mean of its divisors is an integer number (22518505).

Almost surely, 2^45037009 is an apocalyptic number.

It is an amenable number.

45037009 is a deficient number, since it is larger than the sum of its proper divisors (1).

45037009 is an equidigital number, since it uses as much as digits as its factorization.

45037009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 45037009 is about 6710.9618535647. The cubic root of 45037009 is about 355.7868126666.

The spelling of 45037009 in words is "forty-five million, thirty-seven thousand, nine".