520101172 has 12 divisors (see below), whose sum is σ = 910845796. Its totient is φ = 259859520.

The previous prime is 520101143. The next prime is 520101181. The reversal of 520101172 is 271101025.

It can be written as a sum of positive squares in 2 ways, for example, as 221295376 + 298805796 = 14876^2 + 17286^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41553 + ... + 52600.

Almost surely, 2^520101172 is an apocalyptic number.

It is an amenable number.

520101172 is a deficient number, since it is larger than the sum of its proper divisors (390744624).

520101172 is a wasteful number, since it uses less digits than its factorization.

520101172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95538 (or 95536 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 520101172 is about 22805.7267369404. The cubic root of 520101172 is about 804.1973002419.

Adding to 520101172 its reverse (271101025), we get a palindrome (791202197).

The spelling of 520101172 in words is "five hundred twenty million, one hundred one thousand, one hundred seventy-two".