520145601 has 16 divisors (see below), whose sum is σ = 698544000. Its totient is φ = 344263808.

The previous prime is 520145581. The next prime is 520145609. The reversal of 520145601 is 106541025.

It is a cyclic number.

It is not a de Polignac number, because 520145601 - 2⁷ = 520145473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520145609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495325 + ... + 496373.

It is an arithmetic number, because the mean of its divisors is an integer number (43659000).

Almost surely, 2^520145601 is an apocalyptic number.

It is an amenable number.

520145601 is a deficient number, since it is larger than the sum of its proper divisors (178398399).

520145601 is a wasteful number, since it uses less digits than its factorization.

520145601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 520145601 is about 22806.7007916533. The cubic root of 520145601 is about 804.2201987768.

Adding to 520145601 its reverse (106541025), we get a palindrome (626686626).

The spelling of 520145601 in words is "five hundred twenty million, one hundred forty-five thousand, six hundred one".