520401052061 has 12 divisors (see below), whose sum is σ = 573205315200. Its totient is φ = 472104147240.

The previous prime is 520401052051. The next prime is 520401052153. The reversal of 520401052061 is 160250104025.

It is not a de Polignac number, because 520401052061 - 2¹⁸ = 520400789917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520401052061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520401052001) 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, 4431431 + ... + 4547348.

It is an arithmetic number, because the mean of its divisors is an integer number (47767109600).

Almost surely, 2^520401052061 is an apocalyptic number.

It is an amenable number.

520401052061 is a deficient number, since it is larger than the sum of its proper divisors (52804263139).

520401052061 is a wasteful number, since it uses less digits than its factorization.

520401052061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8979280 (or 8979269 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 520401052061 its reverse (160250104025), we get a palindrome (680651156086).

The spelling of 520401052061 in words is "five hundred twenty billion, four hundred one million, fifty-two thousand, sixty-one".