520400041 has 12 divisors (see below), whose sum is σ = 626239620. Its totient is φ = 430674720.

The previous prime is 520400033. The next prime is 520400051. The reversal of 520400041 is 140004025.

It can be written as a sum of positive squares in 2 ways, for example, as 440118441 + 80281600 = 20979^2 + 8960^2 .

It is not a de Polignac number, because 520400041 - 2³ = 520400033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520399988 and 520400024.

It is not an unprimeable number, because it can be changed into a prime (520400011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181690 + ... + 184531.

It is an arithmetic number, because the mean of its divisors is an integer number (52186635).

Almost surely, 2^520400041 is an apocalyptic number.

It is an amenable number.

520400041 is a deficient number, since it is larger than the sum of its proper divisors (105839579).

520400041 is a wasteful number, since it uses less digits than its factorization.

520400041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366264 (or 366257 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 520400041 is about 22812.2782948131. The cubic root of 520400041 is about 804.3513110592.

Adding to 520400041 its reverse (140004025), we get a palindrome (660404066).

The spelling of 520400041 in words is "five hundred twenty million, four hundred thousand, forty-one".