520427529 has 6 divisors (see below), whose sum is σ = 751728666. Its totient is φ = 346951680.

The previous prime is 520427527. The next prime is 520427543. The reversal of 520427529 is 925724025.

It is a happy number.

520427529 is a `hidden beast` number, since 520 + 42 + 75 + 29 = 666.

It can be written as a sum of positive squares in only one way, i.e., 276224400 + 244203129 = 16620^2 + 15627^2 .

It is not a de Polignac number, because 520427529 - 2¹ = 520427527 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 520427493 and 520427502.

It is not an unprimeable number, because it can be changed into a prime (520427521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28912632 + ... + 28912649.

It is an arithmetic number, because the mean of its divisors is an integer number (125288111).

Almost surely, 2^520427529 is an apocalyptic number.

It is an amenable number.

520427529 is a deficient number, since it is larger than the sum of its proper divisors (231301137).

520427529 is a wasteful number, since it uses less digits than its factorization.

520427529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57825287 (or 57825284 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 520427529 is about 22812.8807694250. The cubic root of 520427529 is about 804.3654729973.

The spelling of 520427529 in words is "five hundred twenty million, four hundred twenty-seven thousand, five hundred twenty-nine".