45779891 has 4 divisors (see below), whose sum is σ = 46200000. Its totient is φ = 45359784.

The previous prime is 45779879. The next prime is 45779897. The reversal of 45779891 is 19897754.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19897754 = 2 ⋅9948877.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45779891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45779897) 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, 209891 + ... + 210108.

It is an arithmetic number, because the mean of its divisors is an integer number (11550000).

Almost surely, 2^45779891 is an apocalyptic number.

45779891 is a deficient number, since it is larger than the sum of its proper divisors (420109).

45779891 is a wasteful number, since it uses less digits than its factorization.

45779891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420108.

The product of its digits is 635040, while the sum is 50.

The square root of 45779891 is about 6766.0838747388. The cubic root of 45779891 is about 357.7323796036.

The spelling of 45779891 in words is "forty-five million, seven hundred seventy-nine thousand, eight hundred ninety-one".