500551 has 4 divisors (see below), whose sum is σ = 504504. Its totient is φ = 496600.

The previous prime is 500527. The next prime is 500567. The reversal of 500551 is 155005.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 500551 - 2⁵ = 500519 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500501) 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 3 ways as a sum of consecutive naturals, for example, 1780 + ... + 2041.

It is an arithmetic number, because the mean of its divisors is an integer number (126126).

2⁵⁰⁰⁵⁵¹ is an apocalyptic number.

500551 is a deficient number, since it is larger than the sum of its proper divisors (3953).

500551 is a wasteful number, since it uses less digits than its factorization.

500551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3952.

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 500551 is about 707.4962897429. The cubic root of 500551 is about 79.3991971612.

Adding to 500551 its reverse (155005), we get a palindrome (655556).

It can be divided in two parts, 5005 and 51, that multiplied together give a triangular number (255255 = T₇₁₄).

The spelling of 500551 in words is "five hundred thousand, five hundred fifty-one".