520022687 has 2 divisors, whose sum is σ = 520022688. Its totient is φ = 520022686.

The previous prime is 520022683. The next prime is 520022689. The reversal of 520022687 is 786220025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520022687 - 2² = 520022683 is a prime.

Together with 520022689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520022683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260011343 + 260011344.

It is an arithmetic number, because the mean of its divisors is an integer number (260011344).

Almost surely, 2^520022687 is an apocalyptic number.

520022687 is a deficient number, since it is larger than the sum of its proper divisors (1).

520022687 is an equidigital number, since it uses as much as digits as its factorization.

520022687 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 520022687 is about 22804.0059419392. The cubic root of 520022687 is about 804.1568461894.

The spelling of 520022687 in words is "five hundred twenty million, twenty-two thousand, six hundred eighty-seven".