551927 has 2 divisors, whose sum is σ = 551928. Its totient is φ = 551926.

The previous prime is 551917. The next prime is 551933. The reversal of 551927 is 729155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551927 - 2⁴ = 551911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551927.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275963 + 275964.

It is an arithmetic number, because the mean of its divisors is an integer number (275964).

2⁵⁵¹⁹²⁷ is an apocalyptic number.

551927 is a deficient number, since it is larger than the sum of its proper divisors (1).

551927 is an equidigital number, since it uses as much as digits as its factorization.

551927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3150, while the sum is 29.

The square root of 551927 is about 742.9178958674. The cubic root of 551927 is about 82.0277023197.

The spelling of 551927 in words is "five hundred fifty-one thousand, nine hundred twenty-seven".