45236691 has 16 divisors (see below), whose sum is σ = 67372320. Its totient is φ = 29998080.

The previous prime is 45236689. The next prime is 45236729. The reversal of 45236691 is 19663254.

It is a happy number.

It is not a de Polignac number, because 45236691 - 2¹ = 45236689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45236621) 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, 871 + ... + 9551.

It is an arithmetic number, because the mean of its divisors is an integer number (4210770).

Almost surely, 2^45236691 is an apocalyptic number.

45236691 is a deficient number, since it is larger than the sum of its proper divisors (22135629).

45236691 is a wasteful number, since it uses less digits than its factorization.

45236691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8883 (or 8877 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 45236691 is about 6725.8227006070. The cubic root of 45236691 is about 356.3118585105.

The spelling of 45236691 in words is "forty-five million, two hundred thirty-six thousand, six hundred ninety-one".