551667 has 16 divisors (see below), whose sum is σ = 807840. Its totient is φ = 333312.

The previous prime is 551659. The next prime is 551671. The reversal of 551667 is 766155.

It is not a de Polignac number, because 551667 - 2³ = 551659 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551667.

It is not an unprimeable number, because it can be changed into a prime (551767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1293 + ... + 1665.

It is an arithmetic number, because the mean of its divisors is an integer number (50490).

2⁵⁵¹⁶⁶⁷ is an apocalyptic number.

551667 is a deficient number, since it is larger than the sum of its proper divisors (256173).

551667 is a wasteful number, since it uses less digits than its factorization.

551667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422.

The product of its digits is 6300, while the sum is 30.

The square root of 551667 is about 742.7428895654. The cubic root of 551667 is about 82.0148198477.

The spelling of 551667 in words is "five hundred fifty-one thousand, six hundred sixty-seven".