550540123 has 8 divisors (see below), whose sum is σ = 630021600. Its totient is φ = 471266880.

The previous prime is 550540103. The next prime is 550540127. The reversal of 550540123 is 321045055.

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

It is not a de Polignac number, because 550540123 - 2⁵ = 550540091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550540127) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 46348 + ... + 57001.

It is an arithmetic number, because the mean of its divisors is an integer number (78752700).

Almost surely, 2^550540123 is an apocalyptic number.

550540123 is a deficient number, since it is larger than the sum of its proper divisors (79481477).

550540123 is a wasteful number, since it uses less digits than its factorization.

550540123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104117.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 550540123 is about 23463.5914343904. The cubic root of 550540123 is about 819.5893854365.

Adding to 550540123 its reverse (321045055), we get a palindrome (871585178).

The spelling of 550540123 in words is "five hundred fifty million, five hundred forty thousand, one hundred twenty-three".