45017009 has 2 divisors, whose sum is σ = 45017010. Its totient is φ = 45017008.

The previous prime is 45016999. The next prime is 45017017. The reversal of 45017009 is 90071054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38626225 + 6390784 = 6215^2 + 2528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45017009 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (45017039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22508504 + 22508505.

It is an arithmetic number, because the mean of its divisors is an integer number (22508505).

Almost surely, 2^45017009 is an apocalyptic number.

It is an amenable number.

45017009 is a deficient number, since it is larger than the sum of its proper divisors (1).

45017009 is an equidigital number, since it uses as much as digits as its factorization.

45017009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 45017009 is about 6709.4715887319. The cubic root of 45017009 is about 355.7341390248.

The spelling of 45017009 in words is "forty-five million, seventeen thousand, nine".