513240650 has 48 divisors (see below), whose sum is σ = 1061265408. Its totient is φ = 183384000.

The previous prime is 513240649. The next prime is 513240697. The reversal of 513240650 is 56042315.

It is a Harshad number since it is a multiple of its sum of digits (26).

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 23 ways as a sum of consecutive naturals, for example, 7415 + ... + 32885.

It is an arithmetic number, because the mean of its divisors is an integer number (22109696).

Almost surely, 2^513240650 is an apocalyptic number.

513240650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

513240650 is an abundant number, since it is smaller than the sum of its proper divisors (548024758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513240650 is a wasteful number, since it uses less digits than its factorization.

513240650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25527 (or 25522 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 513240650 is about 22654.8151614618. The cubic root of 513240650 is about 800.6456506539.

Adding to 513240650 its reverse (56042315), we get a palindrome (569282965).

The spelling of 513240650 in words is "five hundred thirteen million, two hundred forty thousand, six hundred fifty".