511123 has 2 divisors, whose sum is σ = 511124. Its totient is φ = 511122.

The previous prime is 511111. The next prime is 511151. The reversal of 511123 is 321115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 511123 - 2⁹ = 510611 is a prime.

It is a super-2 number, since 2×511123² = 522493442258, which contains 22 as substring.

511123 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (511153) 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 as a sum of consecutive naturals, namely, 255561 + 255562.

It is an arithmetic number, because the mean of its divisors is an integer number (255562).

2⁵¹¹¹²³ is an apocalyptic number.

511123 is a deficient number, since it is larger than the sum of its proper divisors (1).

511123 is an equidigital number, since it uses as much as digits as its factorization.

511123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30, while the sum is 13.

The square root of 511123 is about 714.9286677704. The cubic root of 511123 is about 79.9542968119.

Adding to 511123 its reverse (321115), we get a palindrome (832238).

It can be divided in two parts, 51112 and 3, that added together give a palindrome (51115).

The spelling of 511123 in words is "five hundred eleven thousand, one hundred twenty-three".