505126 has 16 divisors (see below), whose sum is σ = 806400. Its totient is φ = 236808.

The previous prime is 505123. The next prime is 505129. The reversal of 505126 is 621505.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (505123) and next prime (505129).

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 (505123) 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, 3565 + ... + 3703.

It is an arithmetic number, because the mean of its divisors is an integer number (50400).

2⁵⁰⁵¹²⁶ is an apocalyptic number.

505126 is the 450-th centered pentagonal number.

505126 is a deficient number, since it is larger than the sum of its proper divisors (301274).

505126 is a wasteful number, since it uses less digits than its factorization.

505126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 505126 is about 710.7221679391. The cubic root of 505126 is about 79.6403648715.

The spelling of 505126 in words is "five hundred five thousand, one hundred twenty-six".