520213427 has 2 divisors, whose sum is σ = 520213428. Its totient is φ = 520213426.

The previous prime is 520213423. The next prime is 520213439. The reversal of 520213427 is 724312025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520213427 - 2² = 520213423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520213396 and 520213405.

It is not a weakly prime, because it can be changed into another prime (520213423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260106713 + 260106714.

It is an arithmetic number, because the mean of its divisors is an integer number (260106714).

Almost surely, 2^520213427 is an apocalyptic number.

520213427 is a deficient number, since it is larger than the sum of its proper divisors (1).

520213427 is an equidigital number, since it uses as much as digits as its factorization.

520213427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 520213427 is about 22808.1877184488. The cubic root of 520213427 is about 804.2551535204.

The spelling of 520213427 in words is "five hundred twenty million, two hundred thirteen thousand, four hundred twenty-seven".