45530509 has 2 divisors, whose sum is σ = 45530510. Its totient is φ = 45530508.

The previous prime is 45530503. The next prime is 45530519. The reversal of 45530509 is 90503554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33385284 + 12145225 = 5778^2 + 3485^2 .

It is a cyclic number.

It is not a de Polignac number, because 45530509 - 2¹³ = 45522317 is a prime.

It is equal to p_2748424 and since 45530509 and 2748424 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45530503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22765254 + 22765255.

It is an arithmetic number, because the mean of its divisors is an integer number (22765255).

Almost surely, 2^45530509 is an apocalyptic number.

It is an amenable number.

45530509 is a deficient number, since it is larger than the sum of its proper divisors (1).

45530509 is an equidigital number, since it uses as much as digits as its factorization.

45530509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 45530509 is about 6747.6298801876. The cubic root of 45530509 is about 357.0816244507.

The spelling of 45530509 in words is "forty-five million, five hundred thirty thousand, five hundred nine".