520542650 has 24 divisors (see below), whose sum is σ = 968820060. Its totient is φ = 208085760.

The previous prime is 520542623. The next prime is 520542661. The reversal of 520542650 is 56245025.

It can be written as a sum of positive squares in 6 ways, for example, as 92756161 + 427786489 = 9631^2 + 20683^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131906 + ... + 135794.

Almost surely, 2^520542650 is an apocalyptic number.

520542650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

520542650 is a deficient number, since it is larger than the sum of its proper divisors (448277410).

520542650 is a wasteful number, since it uses less digits than its factorization.

520542650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6578 (or 6573 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 520542650 is about 22815.4037877921. The cubic root of 520542650 is about 804.4247784244.

Adding to 520542650 its reverse (56245025), we get a palindrome (576787675).

The spelling of 520542650 in words is "five hundred twenty million, five hundred forty-two thousand, six hundred fifty".