45727779 has 4 divisors (see below), whose sum is σ = 60970376. Its totient is φ = 30485184.

The previous prime is 45727741. The next prime is 45727793. The reversal of 45727779 is 97772754.

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

It is not a de Polignac number, because 45727779 - 2¹⁵ = 45695011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45727379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7621294 + ... + 7621299.

It is an arithmetic number, because the mean of its divisors is an integer number (15242594).

Almost surely, 2^45727779 is an apocalyptic number.

45727779 is a deficient number, since it is larger than the sum of its proper divisors (15242597).

45727779 is a wasteful number, since it uses less digits than its factorization.

45727779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15242596.

The product of its digits is 864360, while the sum is 48.

The square root of 45727779 is about 6762.2318061421. The cubic root of 45727779 is about 357.5965905240.

The spelling of 45727779 in words is "forty-five million, seven hundred twenty-seven thousand, seven hundred seventy-nine".