551125117 has 2 divisors, whose sum is σ = 551125118. Its totient is φ = 551125116.

The previous prime is 551125097. The next prime is 551125123. The reversal of 551125117 is 711521155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292204836 + 258920281 = 17094^2 + 16091^2 .

It is a cyclic number.

It is not a de Polignac number, because 551125117 - 2²⁷ = 416907389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551125147) 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, 275562558 + 275562559.

It is an arithmetic number, because the mean of its divisors is an integer number (275562559).

Almost surely, 2^551125117 is an apocalyptic number.

It is an amenable number.

551125117 is a deficient number, since it is larger than the sum of its proper divisors (1).

551125117 is an equidigital number, since it uses as much as digits as its factorization.

551125117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1750, while the sum is 28.

The square root of 551125117 is about 23476.0541190380. The cubic root of 551125117 is about 819.8795763073.

It can be divided in two parts, 5511 and 25117, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 551125117 in words is "five hundred fifty-one million, one hundred twenty-five thousand, one hundred seventeen".