520434437 has 2 divisors, whose sum is σ = 520434438. Its totient is φ = 520434436.

The previous prime is 520434407. The next prime is 520434449. The reversal of 520434437 is 734434025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 513203716 + 7230721 = 22654^2 + 2689^2 .

It is a cyclic number.

It is not a de Polignac number, because 520434437 - 2⁶ = 520434373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520434407) 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, 260217218 + 260217219.

It is an arithmetic number, because the mean of its divisors is an integer number (260217219).

Almost surely, 2^520434437 is an apocalyptic number.

It is an amenable number.

520434437 is a deficient number, since it is larger than the sum of its proper divisors (1).

520434437 is an equidigital number, since it uses as much as digits as its factorization.

520434437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 32.

The square root of 520434437 is about 22813.0321746146. The cubic root of 520434437 is about 804.3690319508.

The spelling of 520434437 in words is "five hundred twenty million, four hundred thirty-four thousand, four hundred thirty-seven".