522712387 has 2 divisors, whose sum is σ = 522712388. Its totient is φ = 522712386.

The previous prime is 522712381. The next prime is 522712459. The reversal of 522712387 is 783217225.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 522712387 - 2⁷ = 522712259 is a prime.

It is not a weakly prime, because it can be changed into another prime (522712381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261356193 + 261356194.

It is an arithmetic number, because the mean of its divisors is an integer number (261356194).

Almost surely, 2^522712387 is an apocalyptic number.

522712387 is a deficient number, since it is larger than the sum of its proper divisors (1).

522712387 is an equidigital number, since it uses as much as digits as its factorization.

522712387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 522712387 is about 22862.9041681060. The cubic root of 522712387 is about 805.5409026254.

The spelling of 522712387 in words is "five hundred twenty-two million, seven hundred twelve thousand, three hundred eighty-seven".