520102404452 has 6 divisors (see below), whose sum is σ = 910179207798. Its totient is φ = 260051202224.

The previous prime is 520102404443. The next prime is 520102404487. The reversal of 520102404452 is 254404201025.

It can be written as a sum of positive squares in only one way, i.e., 450208792576 + 69893611876 = 670976^2 + 264374^2 .

It is a super-2 number, since 2×520102404452² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65012800553 + ... + 65012800560.

It is an arithmetic number, because the mean of its divisors is an integer number (151696534633).

Almost surely, 2^520102404452 is an apocalyptic number.

It is an amenable number.

520102404452 is a deficient number, since it is larger than the sum of its proper divisors (390076803346).

520102404452 is a wasteful number, since it uses less digits than its factorization.

520102404452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130025601117 (or 130025601115 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 520102404452 its reverse (254404201025), we get a palindrome (774506605477).

The spelling of 520102404452 in words is "five hundred twenty billion, one hundred two million, four hundred four thousand, four hundred fifty-two".