45745009 has 4 divisors (see below), whose sum is σ = 45767680. Its totient is φ = 45722340.

The previous prime is 45745003. The next prime is 45745013. The reversal of 45745009 is 90054754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45745009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45745003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7977 + ... + 12454.

It is an arithmetic number, because the mean of its divisors is an integer number (11441920).

Almost surely, 2^45745009 is an apocalyptic number.

It is an amenable number.

45745009 is a deficient number, since it is larger than the sum of its proper divisors (22671).

45745009 is a wasteful number, since it uses less digits than its factorization.

45745009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22670.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 45745009 is about 6763.5056738351. The cubic root of 45745009 is about 357.6414984238.

The spelling of 45745009 in words is "forty-five million, seven hundred forty-five thousand, nine".