550530123 has 32 divisors (see below), whose sum is σ = 865197312. Its totient is φ = 306979200.

The previous prime is 550530107. The next prime is 550530137. The reversal of 550530123 is 321035055.

It is not a de Polignac number, because 550530123 - 2⁴ = 550530107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 550530093 and 550530102.

It is not an unprimeable number, because it can be changed into a prime (550530103) 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, 140061 + ... + 143937.

It is an arithmetic number, because the mean of its divisors is an integer number (27037416).

Almost surely, 2^550530123 is an apocalyptic number.

550530123 is a deficient number, since it is larger than the sum of its proper divisors (314667189).

550530123 is a wasteful number, since it uses less digits than its factorization.

550530123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4235.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 550530123 is about 23463.3783373154. The cubic root of 550530123 is about 819.5844230713.

Adding to 550530123 its reverse (321035055), we get a palindrome (871565178).

The spelling of 550530123 in words is "five hundred fifty million, five hundred thirty thousand, one hundred twenty-three".