550151661 has 16 divisors (see below), whose sum is σ = 742484160. Its totient is φ = 362319360.

The previous prime is 550151627. The next prime is 550151753. The reversal of 550151661 is 166151055.

550151661 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 550151661 - 2⁹ = 550151149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550151621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86941 + ... + 93053.

It is an arithmetic number, because the mean of its divisors is an integer number (46405260).

Almost surely, 2^550151661 is an apocalyptic number.

It is an amenable number.

550151661 is a deficient number, since it is larger than the sum of its proper divisors (192332499).

550151661 is a wasteful number, since it uses less digits than its factorization.

550151661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6476.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 550151661 is about 23455.3119996303. The cubic root of 550151661 is about 819.3965722150.

The spelling of 550151661 in words is "five hundred fifty million, one hundred fifty-one thousand, six hundred sixty-one".