551587 has 2 divisors, whose sum is σ = 551588. Its totient is φ = 551586.

The previous prime is 551581. The next prime is 551597. The reversal of 551587 is 785155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551587 - 2¹⁹ = 27299 is a prime.

551587 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (551581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275793 + 275794.

It is an arithmetic number, because the mean of its divisors is an integer number (275794).

2⁵⁵¹⁵⁸⁷ is an apocalyptic number.

551587 is a deficient number, since it is larger than the sum of its proper divisors (1).

551587 is an equidigital number, since it uses as much as digits as its factorization.

551587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7000, while the sum is 31.

The square root of 551587 is about 742.6890331761. The cubic root of 551587 is about 82.0108551959.

The spelling of 551587 in words is "five hundred fifty-one thousand, five hundred eighty-seven".