550551001 has 32 divisors (see below), whose sum is σ = 782707968. Its totient is φ = 372695040.

The previous prime is 550550999. The next prime is 550551019. The reversal of 550551001 is 100155055.

550551001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 550551001 - 2¹ = 550550999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550551031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 841 + ... + 33193.

It is an arithmetic number, because the mean of its divisors is an integer number (24459624).

Almost surely, 2^550551001 is an apocalyptic number.

It is an amenable number.

550551001 is a deficient number, since it is larger than the sum of its proper divisors (232156967).

550551001 is a wasteful number, since it uses less digits than its factorization.

550551001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32401.

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 550551001 is about 23463.8232391910. The cubic root of 550551001 is about 819.5947834292.

The spelling of 550551001 in words is "five hundred fifty million, five hundred fifty-one thousand, one".