551655 has 48 divisors (see below), whose sum is σ = 1100736. Its totient is φ = 253440.

The previous prime is 551653. The next prime is 551659. The reversal of 551655 is 556155.

551655 is a `hidden beast` number, since 5 + 5 + 1 + 655 = 666.

It is not a de Polignac number, because 551655 - 2¹ = 551653 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551655.

It is not an unprimeable number, because it can be changed into a prime (551651) 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 47 ways as a sum of consecutive naturals, for example, 13435 + ... + 13475.

It is an arithmetic number, because the mean of its divisors is an integer number (22932).

2⁵⁵¹⁶⁵⁵ is an apocalyptic number.

551655 is a deficient number, since it is larger than the sum of its proper divisors (549081).

551655 is a wasteful number, since it uses less digits than its factorization.

551655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 85 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 551655 is about 742.7348113560. The cubic root of 551655 is about 82.0142251744.

The spelling of 551655 in words is "five hundred fifty-one thousand, six hundred fifty-five".