520451101252 has 6 divisors (see below), whose sum is σ = 910789427198. Its totient is φ = 260225550624.

The previous prime is 520451101241. The next prime is 520451101349. The reversal of 520451101252 is 252101154025.

It can be written as a sum of positive squares in only one way, i.e., 445777887556 + 74673213696 = 667666^2 + 273264^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 520451101252.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65056387653 + ... + 65056387660.

Almost surely, 2^520451101252 is an apocalyptic number.

It is an amenable number.

520451101252 is a deficient number, since it is larger than the sum of its proper divisors (390338325946).

520451101252 is a wasteful number, since it uses less digits than its factorization.

520451101252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130112775317 (or 130112775315 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 520451101252 its reverse (252101154025), we get a palindrome (772552255277).

The spelling of 520451101252 in words is "five hundred twenty billion, four hundred fifty-one million, one hundred one thousand, two hundred fifty-two".