45072727 has 4 divisors (see below), whose sum is σ = 51511696. Its totient is φ = 38633760.

The previous prime is 45072721. The next prime is 45072743. The reversal of 45072727 is 72727054.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45072727 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45072692 and 45072701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45072721) 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, 3219474 + ... + 3219487.

It is an arithmetic number, because the mean of its divisors is an integer number (12877924).

Almost surely, 2^45072727 is an apocalyptic number.

45072727 is a deficient number, since it is larger than the sum of its proper divisors (6438969).

45072727 is an equidigital number, since it uses as much as digits as its factorization.

45072727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6438968.

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 45072727 is about 6713.6224946001. The cubic root of 45072727 is about 355.8808437434.

The spelling of 45072727 in words is "forty-five million, seventy-two thousand, seven hundred twenty-seven".