45329891 has 4 divisors (see below), whose sum is σ = 45502512. Its totient is φ = 45157272.

The previous prime is 45329881. The next prime is 45329909. The reversal of 45329891 is 19892354.

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 45329891 - 2⁶ = 45329827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45329831) 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, 85916 + ... + 86441.

It is an arithmetic number, because the mean of its divisors is an integer number (11375628).

Almost surely, 2^45329891 is an apocalyptic number.

45329891 is a deficient number, since it is larger than the sum of its proper divisors (172621).

45329891 is a wasteful number, since it uses less digits than its factorization.

45329891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172620.

The product of its digits is 77760, while the sum is 41.

The square root of 45329891 is about 6732.7476560465. The cubic root of 45329891 is about 356.5563907290.

The spelling of 45329891 in words is "forty-five million, three hundred twenty-nine thousand, eight hundred ninety-one".