520129829 has 2 divisors, whose sum is σ = 520129830. Its totient is φ = 520129828.

The previous prime is 520129823. The next prime is 520129913. The reversal of 520129829 is 928921025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368716804 + 151413025 = 19202^2 + 12305^2 .

It is a cyclic number.

It is not a de Polignac number, because 520129829 - 2⁸ = 520129573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520129792 and 520129801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520129823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260064914 + 260064915.

It is an arithmetic number, because the mean of its divisors is an integer number (260064915).

Almost surely, 2^520129829 is an apocalyptic number.

It is an amenable number.

520129829 is a deficient number, since it is larger than the sum of its proper divisors (1).

520129829 is an equidigital number, since it uses as much as digits as its factorization.

520129829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 520129829 is about 22806.3550134606. The cubic root of 520129829 is about 804.2120700982.

The spelling of 520129829 in words is "five hundred twenty million, one hundred twenty-nine thousand, eight hundred twenty-nine".