45309591 has 8 divisors (see below), whose sum is σ = 67125360. Its totient is φ = 30206376.

The previous prime is 45309577. The next prime is 45309619. The reversal of 45309591 is 19590354.

It is not a de Polignac number, because 45309591 - 2⁶ = 45309527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45309521) 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, 839040 + ... + 839093.

It is an arithmetic number, because the mean of its divisors is an integer number (8390670).

Almost surely, 2^45309591 is an apocalyptic number.

45309591 is a deficient number, since it is larger than the sum of its proper divisors (21815769).

45309591 is a wasteful number, since it uses less digits than its factorization.

45309591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678142 (or 1678136 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 45309591 is about 6731.2399303546. The cubic root of 45309591 is about 356.5031574554.

The spelling of 45309591 in words is "forty-five million, three hundred nine thousand, five hundred ninety-one".