520117191 has 48 divisors (see below), whose sum is σ = 870704640. Its totient is φ = 295868160.

The previous prime is 520117183. The next prime is 520117211. The reversal of 520117191 is 191711025.

It is not a de Polignac number, because 520117191 - 2³ = 520117183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520117111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 211330 + ... + 213776.

It is an arithmetic number, because the mean of its divisors is an integer number (18139680).

Almost surely, 2^520117191 is an apocalyptic number.

520117191 is a deficient number, since it is larger than the sum of its proper divisors (350587449).

520117191 is a wasteful number, since it uses less digits than its factorization.

520117191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596 (or 2593 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 27.

The square root of 520117191 is about 22806.0779398826. The cubic root of 520117191 is about 804.2055565229.

It can be divided in two parts, 520 and 117191, that added together give a palindrome (117711).

The spelling of 520117191 in words is "five hundred twenty million, one hundred seventeen thousand, one hundred ninety-one".