45307691 has 16 divisors (see below), whose sum is σ = 53772768. Its totient is φ = 37632000.

The previous prime is 45307687. The next prime is 45307697. The reversal of 45307691 is 19670354.

It is a cyclic number.

It is not a de Polignac number, because 45307691 - 2² = 45307687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45307697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12875 + ... + 16011.

It is an arithmetic number, because the mean of its divisors is an integer number (3360798).

Almost surely, 2^45307691 is an apocalyptic number.

45307691 is a deficient number, since it is larger than the sum of its proper divisors (8465077).

45307691 is a wasteful number, since it uses less digits than its factorization.

With its successor (45307692) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (3262).

45307691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3262.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 45307691 is about 6731.0987958876. The cubic root of 45307691 is about 356.4981742171.

It can be divided in two parts, 4530 and 7691, that added together give a palindrome (12221).

The spelling of 45307691 in words is "forty-five million, three hundred seven thousand, six hundred ninety-one".