520204001701 has 4 divisors (see below), whose sum is σ = 520223373504. Its totient is φ = 520184629900.

The previous prime is 520204001671. The next prime is 520204001711. The reversal of 520204001701 is 107100402025.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520204001701 - 2⁹ = 520204001189 is a prime.

It is a super-3 number, since 3×520204001701³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520204001711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9645565 + ... + 9699346.

It is an arithmetic number, because the mean of its divisors is an integer number (130055843376).

Almost surely, 2^520204001701 is an apocalyptic number.

It is an amenable number.

520204001701 is a deficient number, since it is larger than the sum of its proper divisors (19371803).

520204001701 is a wasteful number, since it uses less digits than its factorization.

520204001701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19371802.

The product of its (nonzero) digits is 560, while the sum is 22.

Adding to 520204001701 its reverse (107100402025), we get a palindrome (627304403726).

The spelling of 520204001701 in words is "five hundred twenty billion, two hundred four million, one thousand, seven hundred one".