520301669 has 2 divisors, whose sum is σ = 520301670. Its totient is φ = 520301668.

The previous prime is 520301651. The next prime is 520301701. The reversal of 520301669 is 966103025.

It is a happy number.

It is an a-pointer prime, because the next prime (520301701) can be obtained adding 520301669 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442597444 + 77704225 = 21038^2 + 8815^2 .

It is a cyclic number.

It is not a de Polignac number, because 520301669 - 2⁸ = 520301413 is a prime.

It is a super-2 number, since 2×520301669² = 541427653528371122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520301629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260150834 + 260150835.

It is an arithmetic number, because the mean of its divisors is an integer number (260150835).

Almost surely, 2^520301669 is an apocalyptic number.

It is an amenable number.

520301669 is a deficient number, since it is larger than the sum of its proper divisors (1).

520301669 is an equidigital number, since it uses as much as digits as its factorization.

520301669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 520301669 is about 22810.1220733253. The cubic root of 520301669 is about 804.3006252872.

The spelling of 520301669 in words is "five hundred twenty million, three hundred one thousand, six hundred sixty-nine".