45331009 has 2 divisors, whose sum is σ = 45331010. Its totient is φ = 45331008.

The previous prime is 45331007. The next prime is 45331037. The reversal of 45331009 is 90013354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45265984 + 65025 = 6728^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 45331009 - 2¹ = 45331007 is a prime.

Together with 45331007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45331001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22665504 + 22665505.

It is an arithmetic number, because the mean of its divisors is an integer number (22665505).

Almost surely, 2^45331009 is an apocalyptic number.

It is an amenable number.

45331009 is a deficient number, since it is larger than the sum of its proper divisors (1).

45331009 is an equidigital number, since it uses as much as digits as its factorization.

45331009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 45331009 is about 6732.8306825584. The cubic root of 45331009 is about 356.5593220308.

The spelling of 45331009 in words is "forty-five million, three hundred thirty-one thousand, nine".