551705423 has 2 divisors, whose sum is σ = 551705424. Its totient is φ = 551705422.

The previous prime is 551705359. The next prime is 551705447. The reversal of 551705423 is 324507155.

551705423 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 551705423 - 2⁶ = 551705359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551705423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551705123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275852711 + 275852712.

It is an arithmetic number, because the mean of its divisors is an integer number (275852712).

Almost surely, 2^551705423 is an apocalyptic number.

551705423 is a deficient number, since it is larger than the sum of its proper divisors (1).

551705423 is an equidigital number, since it uses as much as digits as its factorization.

551705423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 551705423 is about 23488.4103974705. The cubic root of 551705423 is about 820.1672388420.

The spelling of 551705423 in words is "five hundred fifty-one million, seven hundred five thousand, four hundred twenty-three".