551125123 has 2 divisors, whose sum is σ = 551125124. Its totient is φ = 551125122.

The previous prime is 551125117. The next prime is 551125129. The reversal of 551125123 is 321521155.

It is a balanced prime because it is at equal distance from previous prime (551125117) and next prime (551125129).

It is a cyclic number.

It is not a de Polignac number, because 551125123 - 2¹⁷ = 550994051 is a prime.

It is not a weakly prime, because it can be changed into another prime (551125129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275562561 + 275562562.

It is an arithmetic number, because the mean of its divisors is an integer number (275562562).

Almost surely, 2^551125123 is an apocalyptic number.

551125123 is a deficient number, since it is larger than the sum of its proper divisors (1).

551125123 is an equidigital number, since it uses as much as digits as its factorization.

551125123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1500, while the sum is 25.

The square root of 551125123 is about 23476.0542468278. The cubic root of 551125123 is about 819.8795792826.

Adding to 551125123 its reverse (321521155), we get a palindrome (872646278).

The spelling of 551125123 in words is "five hundred fifty-one million, one hundred twenty-five thousand, one hundred twenty-three".