520161379 has 2 divisors, whose sum is σ = 520161380. Its totient is φ = 520161378.

The previous prime is 520161377. The next prime is 520161409. The reversal of 520161379 is 973161025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520161379 - 2¹ = 520161377 is a prime.

Together with 520161377, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (520161377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260080689 + 260080690.

It is an arithmetic number, because the mean of its divisors is an integer number (260080690).

Almost surely, 2^520161379 is an apocalyptic number.

520161379 is a deficient number, since it is larger than the sum of its proper divisors (1).

520161379 is an equidigital number, since it uses as much as digits as its factorization.

520161379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 520161379 is about 22807.0466961420. The cubic root of 520161379 is about 804.2283303832.

The spelling of 520161379 in words is "five hundred twenty million, one hundred sixty-one thousand, three hundred seventy-nine".