45597091 has 4 divisors (see below), whose sum is σ = 45860832. Its totient is φ = 45333352.

The previous prime is 45597067. The next prime is 45597107. The reversal of 45597091 is 19079554.

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

It is a cyclic number.

It is not a de Polignac number, because 45597091 - 2¹⁹ = 45072803 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45597011) 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, 131611 + ... + 131956.

It is an arithmetic number, because the mean of its divisors is an integer number (11465208).

Almost surely, 2^45597091 is an apocalyptic number.

45597091 is a deficient number, since it is larger than the sum of its proper divisors (263741).

45597091 is a wasteful number, since it uses less digits than its factorization.

45597091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263740.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 45597091 is about 6752.5618101577. The cubic root of 45597091 is about 357.2556003140.

The spelling of 45597091 in words is "forty-five million, five hundred ninety-seven thousand, ninety-one".