45081729 has 24 divisors (see below), whose sum is σ = 81187392. Its totient is φ = 23418720.

The previous prime is 45081709. The next prime is 45081733. The reversal of 45081729 is 92718054.

45081729 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 45081729 - 2⁵ = 45081697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45081693 and 45081702.

It is not an unprimeable number, because it can be changed into a prime (45081709) 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, 31834 + ... + 33219.

It is an arithmetic number, because the mean of its divisors is an integer number (3382808).

Almost surely, 2^45081729 is an apocalyptic number.

It is an amenable number.

45081729 is a deficient number, since it is larger than the sum of its proper divisors (36105663).

45081729 is a wasteful number, since it uses less digits than its factorization.

45081729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65077 (or 65074 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 45081729 is about 6714.2928890539. The cubic root of 45081729 is about 355.9045345376.

The spelling of 45081729 in words is "forty-five million, eighty-one thousand, seven hundred twenty-nine".