550721505 has 32 divisors (see below), whose sum is σ = 911700864. Its totient is φ = 283654656.

The previous prime is 550721497. The next prime is 550721539. The reversal of 550721505 is 505127055.

550721505 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 550721505 - 2³ = 550721497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72414 + ... + 79656.

It is an arithmetic number, because the mean of its divisors is an integer number (28490652).

Almost surely, 2^550721505 is an apocalyptic number.

It is an amenable number.

550721505 is a deficient number, since it is larger than the sum of its proper divisors (360979359).

550721505 is a wasteful number, since it uses less digits than its factorization.

550721505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7425.

The product of its (nonzero) digits is 8750, while the sum is 30.

The square root of 550721505 is about 23467.4562959005. The cubic root of 550721505 is about 819.6793833815.

The spelling of 550721505 in words is "five hundred fifty million, seven hundred twenty-one thousand, five hundred five".