520168541 has 2 divisors, whose sum is σ = 520168542. Its totient is φ = 520168540.

The previous prime is 520168487. The next prime is 520168543. The reversal of 520168541 is 145861025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519612025 + 556516 = 22795^2 + 746^2 .

It is a cyclic number.

It is not a de Polignac number, because 520168541 - 2⁶ = 520168477 is a prime.

It is a super-2 number, since 2×520168541² = 541150622092137362, which contains 22 as substring.

Together with 520168543, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 520168498 and 520168507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520168543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260084270 + 260084271.

It is an arithmetic number, because the mean of its divisors is an integer number (260084271).

Almost surely, 2^520168541 is an apocalyptic number.

It is an amenable number.

520168541 is a deficient number, since it is larger than the sum of its proper divisors (1).

520168541 is an equidigital number, since it uses as much as digits as its factorization.

520168541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 520168541 is about 22807.2037084777. The cubic root of 520168541 is about 804.2320214537.

The spelling of 520168541 in words is "five hundred twenty million, one hundred sixty-eight thousand, five hundred forty-one".