520022001 has 8 divisors (see below), whose sum is σ = 729855520. Its totient is φ = 328434912.

The previous prime is 520021991. The next prime is 520022021. The reversal of 520022001 is 100220025.

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

It is not a de Polignac number, because 520022001 - 2⁵ = 520021969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520022021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4561540 + ... + 4561653.

It is an arithmetic number, because the mean of its divisors is an integer number (91231940).

Almost surely, 2^520022001 is an apocalyptic number.

It is an amenable number.

520022001 is a deficient number, since it is larger than the sum of its proper divisors (209833519).

520022001 is a wasteful number, since it uses less digits than its factorization.

520022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9123215.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 520022001 is about 22803.9909007174. The cubic root of 520022001 is about 804.1564925819.

Adding to 520022001 its reverse (100220025), we get a palindrome (620242026).

The spelling of 520022001 in words is "five hundred twenty million, twenty-two thousand, one".