520207101 has 6 divisors (see below), whose sum is σ = 751410270. Its totient is φ = 346804728.

The previous prime is 520207073. The next prime is 520207109. The reversal of 520207101 is 101702025.

It can be written as a sum of positive squares in only one way, i.e., 495107001 + 25100100 = 22251^2 + 5010^2 .

It is not a de Polignac number, because 520207101 - 2¹⁴ = 520190717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520207109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28900386 + ... + 28900403.

It is an arithmetic number, because the mean of its divisors is an integer number (125235045).

Almost surely, 2^520207101 is an apocalyptic number.

It is an amenable number.

520207101 is a deficient number, since it is larger than the sum of its proper divisors (231203169).

520207101 is a wasteful number, since it uses less digits than its factorization.

520207101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57800795 (or 57800792 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 520207101 is about 22808.0490397579. The cubic root of 520207101 is about 804.2518934875.

Adding to 520207101 its reverse (101702025), we get a palindrome (621909126).

The spelling of 520207101 in words is "five hundred twenty million, two hundred seven thousand, one hundred one".