520168372 has 6 divisors (see below), whose sum is σ = 910294658. Its totient is φ = 260084184.

The previous prime is 520168361. The next prime is 520168399. The reversal of 520168372 is 273861025.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 332916516 + 187251856 = 18246^2 + 13684^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65021043 + ... + 65021050.

Almost surely, 2^520168372 is an apocalyptic number.

It is an amenable number.

520168372 is a deficient number, since it is larger than the sum of its proper divisors (390126286).

520168372 is a wasteful number, since it uses less digits than its factorization.

520168372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130042097 (or 130042095 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 520168372 is about 22807.2000035077. The cubic root of 520168372 is about 804.2319343568.

The spelling of 520168372 in words is "five hundred twenty million, one hundred sixty-eight thousand, three hundred seventy-two".