520144330 has 16 divisors (see below), whose sum is σ = 938874240. Its totient is φ = 207476752.

The previous prime is 520144283. The next prime is 520144433. The reversal of 520144330 is 33441025.

It is a super-2 number, since 2×520144330² = 541100248062297800, which contains 22 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 68854 + ... + 76033.

It is an arithmetic number, because the mean of its divisors is an integer number (58679640).

Almost surely, 2^520144330 is an apocalyptic number.

520144330 is a deficient number, since it is larger than the sum of its proper divisors (418729910).

520144330 is a wasteful number, since it uses less digits than its factorization.

520144330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145253.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 520144330 is about 22806.6729270185. The cubic root of 520144330 is about 804.2195437264.

Adding to 520144330 its reverse (33441025), we get a palindrome (553585355).

The spelling of 520144330 in words is "five hundred twenty million, one hundred forty-four thousand, three hundred thirty".