45119721 has 24 divisors (see below), whose sum is σ = 64509120. Its totient is φ = 27998080.

The previous prime is 45119693. The next prime is 45119731. The reversal of 45119721 is 12791154.

45119721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45119721 - 2¹⁴ = 45103337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45119731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115795 + ... + 116183.

It is an arithmetic number, because the mean of its divisors is an integer number (2687880).

Almost surely, 2^45119721 is an apocalyptic number.

45119721 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45119721 is a deficient number, since it is larger than the sum of its proper divisors (19389399).

45119721 is a wasteful number, since it uses less digits than its factorization.

45119721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 456 counting only the distinct ones).

The product of its digits is 2520, while the sum is 30.

The square root of 45119721 is about 6717.1214817063. The cubic root of 45119721 is about 356.0044843310.

The spelling of 45119721 in words is "forty-five million, one hundred nineteen thousand, seven hundred twenty-one".