520855427 has 2 divisors, whose sum is σ = 520855428. Its totient is φ = 520855426.

The previous prime is 520855411. The next prime is 520855451. The reversal of 520855427 is 724558025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520855427 - 2⁴ = 520855411 is a prime.

It is a Chen prime.

It is equal to p_27395156 and since 520855427 and 27395156 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (520855477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260427713 + 260427714.

It is an arithmetic number, because the mean of its divisors is an integer number (260427714).

Almost surely, 2^520855427 is an apocalyptic number.

520855427 is a deficient number, since it is larger than the sum of its proper divisors (1).

520855427 is an equidigital number, since it uses as much as digits as its factorization.

520855427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112000, while the sum is 38.

The square root of 520855427 is about 22822.2572722332. The cubic root of 520855427 is about 804.5858636508.

The spelling of 520855427 in words is "five hundred twenty million, eight hundred fifty-five thousand, four hundred twenty-seven".