551052121 has 2 divisors, whose sum is σ = 551052122. Its totient is φ = 551052120.

The previous prime is 551052109. The next prime is 551052157. The reversal of 551052121 is 121250155.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545876496 + 5175625 = 23364^2 + 2275^2 .

It is a cyclic number.

It is not a de Polignac number, because 551052121 - 2⁷ = 551051993 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 551052092 and 551052101.

It is not a weakly prime, because it can be changed into another prime (551055121) 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 as a sum of consecutive naturals, namely, 275526060 + 275526061.

It is an arithmetic number, because the mean of its divisors is an integer number (275526061).

Almost surely, 2^551052121 is an apocalyptic number.

It is an amenable number.

551052121 is a deficient number, since it is larger than the sum of its proper divisors (1).

551052121 is an equidigital number, since it uses as much as digits as its factorization.

551052121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 551052121 is about 23474.4993769835. The cubic root of 551052121 is about 819.8433772845.

The spelling of 551052121 in words is "five hundred fifty-one million, fifty-two thousand, one hundred twenty-one".