520213487 has 2 divisors, whose sum is σ = 520213488. Its totient is φ = 520213486.

The previous prime is 520213439. The next prime is 520213543. The reversal of 520213487 is 784312025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520213487 - 2⁶ = 520213423 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520213427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260106743 + 260106744.

It is an arithmetic number, because the mean of its divisors is an integer number (260106744).

Almost surely, 2^520213487 is an apocalyptic number.

520213487 is a deficient number, since it is larger than the sum of its proper divisors (1).

520213487 is an equidigital number, since it uses as much as digits as its factorization.

520213487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 520213487 is about 22808.1890337659. The cubic root of 520213487 is about 804.2551844406.

The spelling of 520213487 in words is "five hundred twenty million, two hundred thirteen thousand, four hundred eighty-seven".