513105512 has 8 divisors (see below), whose sum is σ = 962072850. Its totient is φ = 256552752.

The previous prime is 513105511. The next prime is 513105517. The reversal of 513105512 is 215501315.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 512841316 + 264196 = 22646^2 + 514^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (513105511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32069087 + ... + 32069102.

Almost surely, 2^513105512 is an apocalyptic number.

It is an amenable number.

513105512 is a deficient number, since it is larger than the sum of its proper divisors (448967338).

513105512 is a wasteful number, since it uses less digits than its factorization.

513105512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64138195 (or 64138191 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 513105512 is about 22651.8324203584. The cubic root of 513105512 is about 800.5753735823.

Adding to 513105512 its reverse (215501315), we get a palindrome (728606827).

The spelling of 513105512 in words is "five hundred thirteen million, one hundred five thousand, five hundred twelve".