520522145 has 16 divisors (see below), whose sum is σ = 733828032. Its totient is φ = 349440960.

The previous prime is 520522141. The next prime is 520522187. The reversal of 520522145 is 541225025.

It is not a de Polignac number, because 520522145 - 2² = 520522141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520522141) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 363287 + ... + 364716.

It is an arithmetic number, because the mean of its divisors is an integer number (45864252).

Almost surely, 2^520522145 is an apocalyptic number.

520522145 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

520522145 is a deficient number, since it is larger than the sum of its proper divisors (213305887).

520522145 is a wasteful number, since it uses less digits than its factorization.

520522145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728032.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 520522145 is about 22814.9544159089. The cubic root of 520522145 is about 804.4142157634.

The spelling of 520522145 in words is "five hundred twenty million, five hundred twenty-two thousand, one hundred forty-five".