505121 has 8 divisors (see below), whose sum is σ = 548064. Its totient is φ = 463680.

The previous prime is 505117. The next prime is 505123. The reversal of 505121 is 121505.

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 505121 - 2² = 505117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505096 and 505105.

It is not an unprimeable number, because it can be changed into a prime (505123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386 + ... + 1076.

It is an arithmetic number, because the mean of its divisors is an integer number (68508).

2⁵⁰⁵¹²¹ is an apocalyptic number.

It is an amenable number.

505121 is a deficient number, since it is larger than the sum of its proper divisors (42943).

505121 is a wasteful number, since it uses less digits than its factorization.

505121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 505121 is about 710.7186503814. The cubic root of 505121 is about 79.6401020967.

Adding to 505121 its reverse (121505), we get a palindrome (626626).

It can be divided in two parts, 505 and 121, that added together give a palindrome (626).

The spelling of 505121 in words is "five hundred five thousand, one hundred twenty-one".