520285849 has 2 divisors, whose sum is σ = 520285850. Its totient is φ = 520285848.

The previous prime is 520285847. The next prime is 520285861. The reversal of 520285849 is 948582025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362331225 + 157954624 = 19035^2 + 12568^2 .

It is a cyclic number.

It is not a de Polignac number, because 520285849 - 2¹ = 520285847 is a prime.

Together with 520285847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (520285841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260142924 + 260142925.

It is an arithmetic number, because the mean of its divisors is an integer number (260142925).

Almost surely, 2^520285849 is an apocalyptic number.

It is an amenable number.

520285849 is a deficient number, since it is larger than the sum of its proper divisors (1).

520285849 is an equidigital number, since it uses as much as digits as its factorization.

520285849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 520285849 is about 22809.7752948160. The cubic root of 520285849 is about 804.2924735004.

The spelling of 520285849 in words is "five hundred twenty million, two hundred eighty-five thousand, eight hundred forty-nine".