551263 has 8 divisors (see below), whose sum is σ = 580032. Its totient is φ = 523296.

The previous prime is 551233. The next prime is 551269. The reversal of 551263 is 362155.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551263 - 2⁵ = 551231 is a prime.

It is a Duffinian number.

551263 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551269) 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 7 ways as a sum of consecutive naturals, for example, 1581 + ... + 1897.

It is an arithmetic number, because the mean of its divisors is an integer number (72504).

2⁵⁵¹²⁶³ is an apocalyptic number.

551263 is a deficient number, since it is larger than the sum of its proper divisors (28769).

551263 is a wasteful number, since it uses less digits than its factorization.

551263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401.

The product of its digits is 900, while the sum is 22.

The square root of 551263 is about 742.4708748496. The cubic root of 551263 is about 81.9947944346.

The spelling of 551263 in words is "five hundred fifty-one thousand, two hundred sixty-three".