551323123 has 12 divisors (see below), whose sum is σ = 599712960. Its totient is φ = 506596896.

The previous prime is 551323109. The next prime is 551323151. The reversal of 551323123 is 321323155.

551323123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-551323123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551323153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30373 + ... + 45001.

It is an arithmetic number, because the mean of its divisors is an integer number (49976080).

Almost surely, 2^551323123 is an apocalyptic number.

551323123 is a deficient number, since it is larger than the sum of its proper divisors (48389837).

551323123 is a wasteful number, since it uses less digits than its factorization.

551323123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14878 (or 14865 counting only the distinct ones).

The product of its digits is 2700, while the sum is 25.

The square root of 551323123 is about 23480.2709311456. The cubic root of 551323123 is about 819.9777522221.

Adding to 551323123 its reverse (321323155), we get a palindrome (872646278).

The spelling of 551323123 in words is "five hundred fifty-one million, three hundred twenty-three thousand, one hundred twenty-three".