551705447 has 2 divisors, whose sum is σ = 551705448. Its totient is φ = 551705446.

The previous prime is 551705423. The next prime is 551705459. The reversal of 551705447 is 744507155.

551705447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551705447 - 2¹² = 551701351 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 551705447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551705467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275852723 + 275852724.

It is an arithmetic number, because the mean of its divisors is an integer number (275852724).

Almost surely, 2^551705447 is an apocalyptic number.

551705447 is a deficient number, since it is larger than the sum of its proper divisors (1).

551705447 is an equidigital number, since it uses as much as digits as its factorization.

551705447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98000, while the sum is 38.

The square root of 551705447 is about 23488.4109083607. The cubic root of 551705447 is about 820.1672507348.

The spelling of 551705447 in words is "five hundred fifty-one million, seven hundred five thousand, four hundred forty-seven".