520381707 has 8 divisors (see below), whose sum is σ = 694987776. Its totient is φ = 346348392.

The previous prime is 520381703. The next prime is 520381721. The reversal of 520381707 is 707183025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520381707 - 2² = 520381703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520381703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141063 + ... + 144704.

It is an arithmetic number, because the mean of its divisors is an integer number (86873472).

Almost surely, 2^520381707 is an apocalyptic number.

520381707 is a deficient number, since it is larger than the sum of its proper divisors (174606069).

520381707 is a wasteful number, since it uses less digits than its factorization.

520381707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286377.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 520381707 is about 22811.8764462725. The cubic root of 520381707 is about 804.3418650248.

The spelling of 520381707 in words is "five hundred twenty million, three hundred eighty-one thousand, seven hundred seven".