506711491 has 16 divisors (see below), whose sum is σ = 598616928. Its totient is φ = 422841600.

The previous prime is 506711483. The next prime is 506711507. The reversal of 506711491 is 194117605.

It is a cyclic number.

It is not a de Polignac number, because 506711491 - 2³ = 506711483 is a prime.

It is a super-2 number, since 2×506711491² = 513513070222886162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (506111491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16095 + ... + 35671.

It is an arithmetic number, because the mean of its divisors is an integer number (37413558).

Almost surely, 2^506711491 is an apocalyptic number.

506711491 is a deficient number, since it is larger than the sum of its proper divisors (91905437).

506711491 is a wasteful number, since it uses less digits than its factorization.

506711491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19782.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 506711491 is about 22510.2530194576. The cubic root of 506711491 is about 797.2360298128.

The spelling of 506711491 in words is "five hundred six million, seven hundred eleven thousand, four hundred ninety-one".