550001605 has 16 divisors (see below), whose sum is σ = 676368000. Its totient is φ = 429121728.

The previous prime is 550001591. The next prime is 550001651. The reversal of 550001605 is 506100055.

It is a cyclic number.

It is not a de Polignac number, because 550001605 - 2¹¹ = 549999557 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 181896 + ... + 184894.

It is an arithmetic number, because the mean of its divisors is an integer number (42273000).

Almost surely, 2^550001605 is an apocalyptic number.

It is an amenable number.

550001605 is a deficient number, since it is larger than the sum of its proper divisors (126366395).

550001605 is a wasteful number, since it uses less digits than its factorization.

550001605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 550001605 is about 23452.1130178072. The cubic root of 550001605 is about 819.3220675760.

The spelling of 550001605 in words is "five hundred fifty million, one thousand, six hundred five".