45009291 has 4 divisors (see below), whose sum is σ = 60012392. Its totient is φ = 30006192.

The previous prime is 45009287. The next prime is 45009299. The reversal of 45009291 is 19290054.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 45009291 - 2² = 45009287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45009299) 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, 7501546 + ... + 7501551.

It is an arithmetic number, because the mean of its divisors is an integer number (15003098).

Almost surely, 2^45009291 is an apocalyptic number.

45009291 is a deficient number, since it is larger than the sum of its proper divisors (15003101).

45009291 is a wasteful number, since it uses less digits than its factorization.

45009291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15003100.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 45009291 is about 6708.8964070106. The cubic root of 45009291 is about 355.7138080946.

The spelling of 45009291 in words is "forty-five million, nine thousand, two hundred ninety-one".