45420609 has 24 divisors (see below), whose sum is σ = 66301632. Its totient is φ = 27643200.

The previous prime is 45420601. The next prime is 45420643. The reversal of 45420609 is 90602454.

It is not a de Polignac number, because 45420609 - 2³ = 45420601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45420601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50764 + ... + 51650.

It is an arithmetic number, because the mean of its divisors is an integer number (2762568).

Almost surely, 2^45420609 is an apocalyptic number.

It is an amenable number.

45420609 is a deficient number, since it is larger than the sum of its proper divisors (20881023).

45420609 is a wasteful number, since it uses less digits than its factorization.

45420609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 45420609 is about 6739.4813598674. The cubic root of 45420609 is about 356.7940891366.

The spelling of 45420609 in words is "forty-five million, four hundred twenty thousand, six hundred nine".