520413001 has 4 divisors (see below), whose sum is σ = 521572500. Its totient is φ = 519253504.

The previous prime is 520412951. The next prime is 520413007. The reversal of 520413001 is 100314025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 198246400 + 322166601 = 14080^2 + 17949^2 .

It is a cyclic number.

It is not a de Polignac number, because 520413001 - 2¹⁷ = 520281929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520413007) 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, 579076 + ... + 579973.

It is an arithmetic number, because the mean of its divisors is an integer number (130393125).

Almost surely, 2^520413001 is an apocalyptic number.

It is an amenable number.

520413001 is a deficient number, since it is larger than the sum of its proper divisors (1159499).

520413001 is a wasteful number, since it uses less digits than its factorization.

520413001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159498.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 520413001 is about 22812.5623505997. The cubic root of 520413001 is about 804.3579881701.

Adding to 520413001 its reverse (100314025), we get a palindrome (620727026).

The spelling of 520413001 in words is "five hundred twenty million, four hundred thirteen thousand, one".