45005009 has 8 divisors (see below), whose sum is σ = 51499968. Its totient is φ = 38526480.

The previous prime is 45004979. The next prime is 45005017. The reversal of 45005009 is 90050054.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45005009 - 2⁸ = 45004753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45005099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2474 + ... + 9804.

It is an arithmetic number, because the mean of its divisors is an integer number (6437496).

Almost surely, 2^45005009 is an apocalyptic number.

It is an amenable number.

45005009 is a deficient number, since it is larger than the sum of its proper divisors (6494959).

45005009 is an equidigital number, since it uses as much as digits as its factorization.

45005009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8215.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 45005009 is about 6708.5772709271. The cubic root of 45005009 is about 355.7025273509.

It can be divided in two parts, 4500500 and 9, that multiplied together give a triangular number (40504500 = T₉₀₀₀).

The spelling of 45005009 in words is "forty-five million, five thousand, nine".