506124581 has 4 divisors (see below), whose sum is σ = 507399852. Its totient is φ = 504849312.

The previous prime is 506124557. The next prime is 506124583. The reversal of 506124581 is 185421605.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 279892900 + 226231681 = 16730^2 + 15041^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506124581 is a prime.

It is a super-2 number, since 2×506124581² = 512324182984851122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506124583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637040 + ... + 637833.

It is an arithmetic number, because the mean of its divisors is an integer number (126849963).

Almost surely, 2^506124581 is an apocalyptic number.

It is an amenable number.

506124581 is a deficient number, since it is larger than the sum of its proper divisors (1275271).

506124581 is a wasteful number, since it uses less digits than its factorization.

506124581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275270.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 506124581 is about 22497.2127384705. The cubic root of 506124581 is about 796.9281053646.

The spelling of 506124581 in words is "five hundred six million, one hundred twenty-four thousand, five hundred eighty-one".