520702001 has 4 divisors (see below), whose sum is σ = 528035904. Its totient is φ = 513368100.

The previous prime is 520701997. The next prime is 520702003. The reversal of 520702001 is 100207025.

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 520702001 - 2² = 520701997 is a prime.

It is a super-2 number, since 2×520702001² = 542261147690808002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520702003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3666845 + ... + 3666986.

It is an arithmetic number, because the mean of its divisors is an integer number (132008976).

Almost surely, 2^520702001 is an apocalyptic number.

It is an amenable number.

520702001 is a deficient number, since it is larger than the sum of its proper divisors (7333903).

520702001 is an equidigital number, since it uses as much as digits as its factorization.

520702001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333902.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 520702001 is about 22818.8957007126. The cubic root of 520702001 is about 804.5068548337.

Adding to 520702001 its reverse (100207025), we get a palindrome (620909026).

The spelling of 520702001 in words is "five hundred twenty million, seven hundred two thousand, one".