513633012 has 12 divisors (see below), whose sum is σ = 1198477056. Its totient is φ = 171211000.

The previous prime is 513633011. The next prime is 513633013. The reversal of 513633012 is 210336315.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (513633011) and next prime (513633013).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513633011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21401364 + ... + 21401387.

It is an arithmetic number, because the mean of its divisors is an integer number (99873088).

Almost surely, 2^513633012 is an apocalyptic number.

It is an amenable number.

513633012 is an abundant number, since it is smaller than the sum of its proper divisors (684844044).

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

513633012 is a wasteful number, since it uses less digits than its factorization.

513633012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42802758 (or 42802756 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 513633012 is about 22663.4730789436. The cubic root of 513633012 is about 800.8496244368.

Adding to 513633012 its reverse (210336315), we get a palindrome (723969327).

The spelling of 513633012 in words is "five hundred thirteen million, six hundred thirty-three thousand, twelve".