4491072505 has 8 divisors (see below), whose sum is σ = 5404556232. Its totient is φ = 3582678528.

The previous prime is 4491072497. The next prime is 4491072533. The reversal of 4491072505 is 5052701944.

It can be written as a sum of positive squares in 4 ways, for example, as 416037609 + 4075034896 = 20397^2 + 63836^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4491072505 - 2³ = 4491072497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1270494 + ... + 1274023.

It is an arithmetic number, because the mean of its divisors is an integer number (675569529).

Almost surely, 2^4491072505 is an apocalyptic number.

It is an amenable number.

4491072505 is a deficient number, since it is larger than the sum of its proper divisors (913483727).

4491072505 is a wasteful number, since it uses less digits than its factorization.

4491072505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544875.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 4491072505 is about 67015.4646704774. The cubic root of 4491072505 is about 1649.8711261451.

The spelling of 4491072505 in words is "four billion, four hundred ninety-one million, seventy-two thousand, five hundred five".