520220612 has 6 divisors (see below), whose sum is σ = 910386078. Its totient is φ = 260110304.

The previous prime is 520220573. The next prime is 520220633. The reversal of 520220612 is 216022025.

It can be written as a sum of positive squares in only one way, i.e., 511845376 + 8375236 = 22624^2 + 2894^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65027573 + ... + 65027580.

It is an arithmetic number, because the mean of its divisors is an integer number (151731013).

Almost surely, 2^520220612 is an apocalyptic number.

It is an amenable number.

520220612 is a deficient number, since it is larger than the sum of its proper divisors (390165466).

520220612 is a wasteful number, since it uses less digits than its factorization.

520220612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130055157 (or 130055155 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 520220612 is about 22808.3452271312. The cubic root of 520220612 is about 804.2588561973.

Adding to 520220612 its reverse (216022025), we get a palindrome (736242637).

The spelling of 520220612 in words is "five hundred twenty million, two hundred twenty thousand, six hundred twelve".