551723 has 2 divisors, whose sum is σ = 551724. Its totient is φ = 551722.

The previous prime is 551717. The next prime is 551729. The reversal of 551723 is 327155.

551723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (551717) and next prime (551729).

It is a cyclic number.

It is not a de Polignac number, because 551723 - 2⁶ = 551659 is a prime.

It is equal to p₄₅₄₅₅ and since 551723 and 45455 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (551729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275861 + 275862.

It is an arithmetic number, because the mean of its divisors is an integer number (275862).

2⁵⁵¹⁷²³ is an apocalyptic number.

551723 is a deficient number, since it is larger than the sum of its proper divisors (1).

551723 is an equidigital number, since it uses as much as digits as its factorization.

551723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1050, while the sum is 23.

The square root of 551723 is about 742.7805867145. The cubic root of 551723 is about 82.0175948760.

Adding to 551723 its reverse (327155), we get a palindrome (878878).

The spelling of 551723 in words is "five hundred fifty-one thousand, seven hundred twenty-three".