511223 has 2 divisors, whose sum is σ = 511224. Its totient is φ = 511222.

The previous prime is 511213. The next prime is 511237. The reversal of 511223 is 322115.

It is a happy number.

It is an a-pointer prime, because the next prime (511237) can be obtained adding 511223 to its sum of digits (14).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 511223 - 2¹⁰ = 510199 is a prime.

It is a super-2 number, since 2×511223² = 522697911458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511198 and 511207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255611 + 255612.

It is an arithmetic number, because the mean of its divisors is an integer number (255612).

2⁵¹¹²²³ is an apocalyptic number.

511223 is a deficient number, since it is larger than the sum of its proper divisors (1).

511223 is an equidigital number, since it uses as much as digits as its factorization.

511223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60, while the sum is 14.

The square root of 511223 is about 714.9986013972. The cubic root of 511223 is about 79.9595107612.

Adding to 511223 its reverse (322115), we get a palindrome (833338).

The spelling of 511223 in words is "five hundred eleven thousand, two hundred twenty-three".