551531117 has 2 divisors, whose sum is σ = 551531118. Its totient is φ = 551531116.

The previous prime is 551531111. The next prime is 551531147. The reversal of 551531117 is 711135155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 544802281 + 6728836 = 23341^2 + 2594^2 .

It is a cyclic number.

It is not a de Polignac number, because 551531117 - 2¹⁰ = 551530093 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551531117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551531111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275765558 + 275765559.

It is an arithmetic number, because the mean of its divisors is an integer number (275765559).

Almost surely, 2^551531117 is an apocalyptic number.

It is an amenable number.

551531117 is a deficient number, since it is larger than the sum of its proper divisors (1).

551531117 is an equidigital number, since it uses as much as digits as its factorization.

551531117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2625, while the sum is 29.

The square root of 551531117 is about 23484.6996361461. The cubic root of 551531117 is about 820.0808551047.

The spelling of 551531117 in words is "five hundred fifty-one million, five hundred thirty-one thousand, one hundred seventeen".