520543379 has 2 divisors, whose sum is σ = 520543380. Its totient is φ = 520543378.

The previous prime is 520543319. The next prime is 520543483. The reversal of 520543379 is 973345025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520543379 - 2²⁸ = 252107923 is a prime.

It is not a weakly prime, because it can be changed into another prime (520543319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260271689 + 260271690.

It is an arithmetic number, because the mean of its divisors is an integer number (260271690).

Almost surely, 2^520543379 is an apocalyptic number.

520543379 is a deficient number, since it is larger than the sum of its proper divisors (1).

520543379 is an equidigital number, since it uses as much as digits as its factorization.

520543379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 520543379 is about 22815.4197638352. The cubic root of 520543379 is about 804.4251539463.

It can be divided in two parts, 5205 and 43379, that added together give a palindrome (48584).

The spelling of 520543379 in words is "five hundred twenty million, five hundred forty-three thousand, three hundred seventy-nine".