45072709 has 16 divisors (see below), whose sum is σ = 52093440. Its totient is φ = 38594160.

The previous prime is 45072707. The next prime is 45072721. The reversal of 45072709 is 90727054.

45072709 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 45072709 - 2¹ = 45072707 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45072701) 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 15 ways as a sum of consecutive naturals, for example, 15622 + ... + 18280.

It is an arithmetic number, because the mean of its divisors is an integer number (3255840).

Almost surely, 2^45072709 is an apocalyptic number.

It is an amenable number.

45072709 is a deficient number, since it is larger than the sum of its proper divisors (7020731).

45072709 is a wasteful number, since it uses less digits than its factorization.

45072709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 45072709 is about 6713.6211540420. The cubic root of 45072709 is about 355.8807963692.

The spelling of 45072709 in words is "forty-five million, seventy-two thousand, seven hundred nine".