506105791 has 4 divisors (see below), whose sum is σ = 509031432. Its totient is φ = 503180152.

The previous prime is 506105749. The next prime is 506105819. The reversal of 506105791 is 197501605.

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

It is a cyclic number.

It is not a de Polignac number, because 506105791 - 2¹¹ = 506103743 is a prime.

It is a super-2 number, since 2×506105791² = 512286143367471362, 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 (506105291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1462561 + ... + 1462906.

It is an arithmetic number, because the mean of its divisors is an integer number (127257858).

Almost surely, 2^506105791 is an apocalyptic number.

506105791 is a deficient number, since it is larger than the sum of its proper divisors (2925641).

506105791 is a wasteful number, since it uses less digits than its factorization.

506105791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925640.

The product of its (nonzero) digits is 9450, while the sum is 34.

The square root of 506105791 is about 22496.7951273065. The cubic root of 506105791 is about 796.9182431917.

It can be divided in two parts, 50 and 6105791, that added together give a square (6105841 = 2471²).

The spelling of 506105791 in words is "five hundred six million, one hundred five thousand, seven hundred ninety-one".