551108689 has 2 divisors, whose sum is σ = 551108690. Its totient is φ = 551108688.

The previous prime is 551108671. The next prime is 551108693. The reversal of 551108689 is 986801155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420578064 + 130530625 = 20508^2 + 11425^2 .

It is a cyclic number.

It is not a de Polignac number, because 551108689 - 2¹⁷ = 550977617 is a prime.

It is not a weakly prime, because it can be changed into another prime (551108659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275554344 + 275554345.

It is an arithmetic number, because the mean of its divisors is an integer number (275554345).

Almost surely, 2^551108689 is an apocalyptic number.

It is an amenable number.

551108689 is a deficient number, since it is larger than the sum of its proper divisors (1).

551108689 is an equidigital number, since it uses as much as digits as its factorization.

551108689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 43.

The square root of 551108689 is about 23475.7042279886. The cubic root of 551108689 is about 819.8714298719.

The spelling of 551108689 in words is "five hundred fifty-one million, one hundred eight thousand, six hundred eighty-nine".