551255 has 4 divisors (see below), whose sum is σ = 661512. Its totient is φ = 441000.

The previous prime is 551233. The next prime is 551269. The reversal of 551255 is 552155.

551255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552155 = 5 ⋅110431.

It is not a de Polignac number, because 551255 - 2¹⁸ = 289111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55121 + ... + 55130.

It is an arithmetic number, because the mean of its divisors is an integer number (165378).

2⁵⁵¹²⁵⁵ is an apocalyptic number.

551255 is a deficient number, since it is larger than the sum of its proper divisors (110257).

551255 is a wasteful number, since it uses less digits than its factorization.

551255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110256.

The product of its digits is 1250, while the sum is 23.

The square root of 551255 is about 742.4654874134. The cubic root of 551255 is about 81.9943977930.

Subtracting 551255 from its reverse (552155), we obtain a square (900 = 30²).

It can be divided in two parts, 55125 and 5, that multiplied together give a square (275625 = 525²).

The spelling of 551255 in words is "five hundred fifty-one thousand, two hundred fifty-five".