551124121 has 2 divisors, whose sum is σ = 551124122. Its totient is φ = 551124120.

The previous prime is 551124113. The next prime is 551124187. The reversal of 551124121 is 121421155.

551124121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 550418521 + 705600 = 23461^2 + 840^2 .

It is a cyclic number.

It is not a de Polignac number, because 551124121 - 2³ = 551124113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551124092 and 551124101.

It is not a weakly prime, because it can be changed into another prime (551124191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275562060 + 275562061.

It is an arithmetic number, because the mean of its divisors is an integer number (275562061).

Almost surely, 2^551124121 is an apocalyptic number.

It is an amenable number.

551124121 is a deficient number, since it is larger than the sum of its proper divisors (1).

551124121 is an equidigital number, since it uses as much as digits as its factorization.

551124121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 400, while the sum is 22.

The square root of 551124121 is about 23476.0329059234. The cubic root of 551124121 is about 819.8790824083.

Adding to 551124121 its reverse (121421155), we get a palindrome (672545276).

The spelling of 551124121 in words is "five hundred fifty-one million, one hundred twenty-four thousand, one hundred twenty-one".