551598 has 16 divisors (see below), whose sum is σ = 1112400. Its totient is φ = 182336.

The previous prime is 551597. The next prime is 551651. The reversal of 551598 is 895155.

551598 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 551598.

It is not an unprimeable number, because it can be changed into a prime (551597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586 + ... + 1202.

It is an arithmetic number, because the mean of its divisors is an integer number (69525).

2⁵⁵¹⁵⁹⁸ is an apocalyptic number.

551598 is an abundant number, since it is smaller than the sum of its proper divisors (560802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551598 is a wasteful number, since it uses less digits than its factorization.

551598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771.

The product of its digits is 9000, while the sum is 33.

The square root of 551598 is about 742.6964386612. The cubic root of 551598 is about 82.0114003582.

It can be divided in two parts, 55 and 1598, that added together give a triangular number (1653 = T₅₇).

The spelling of 551598 in words is "five hundred fifty-one thousand, five hundred ninety-eight".