520115143 has 8 divisors (see below), whose sum is σ = 532535168. Its totient is φ = 507709944.

The previous prime is 520115137. The next prime is 520115159. The reversal of 520115143 is 341511025.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520115143 - 2⁹ = 520114631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520118143) 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, 103630 + ... + 108532.

It is an arithmetic number, because the mean of its divisors is an integer number (66566896).

Almost surely, 2^520115143 is an apocalyptic number.

520115143 is a deficient number, since it is larger than the sum of its proper divisors (12420025).

520115143 is a wasteful number, since it uses less digits than its factorization.

520115143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7413.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 520115143 is about 22806.0330395271. The cubic root of 520115143 is about 804.2045009818.

Adding to 520115143 its reverse (341511025), we get a palindrome (861626168).

The spelling of 520115143 in words is "five hundred twenty million, one hundred fifteen thousand, one hundred forty-three".