506023121 has 8 divisors (see below), whose sum is σ = 516467688. Its totient is φ = 495648000.

The previous prime is 506023099. The next prime is 506023123. The reversal of 506023121 is 121320605.

It can be written as a sum of positive squares in 4 ways, for example, as 133726096 + 372297025 = 11564^2 + 19295^2 .

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 506023121 - 2¹⁸ = 505760977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 506023093 and 506023102.

It is not an unprimeable number, because it can be changed into a prime (506023123) 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, 2510 + ... + 31911.

It is an arithmetic number, because the mean of its divisors is an integer number (64558461).

Almost surely, 2^506023121 is an apocalyptic number.

It is an amenable number.

506023121 is a deficient number, since it is larger than the sum of its proper divisors (10444567).

506023121 is a wasteful number, since it uses less digits than its factorization.

506023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34723.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 506023121 is about 22494.9576794445. The cubic root of 506023121 is about 796.8748498803.

Adding to 506023121 its reverse (121320605), we get a palindrome (627343726).

The spelling of 506023121 in words is "five hundred six million, twenty-three thousand, one hundred twenty-one".