511512113 has 4 divisors (see below), whose sum is σ = 584585280. Its totient is φ = 438438948.

The previous prime is 511512097. The next prime is 511512143. The reversal of 511512113 is 311215115.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 511512113 - 2⁴ = 511512097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511512143) 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, 36536573 + ... + 36536586.

It is an arithmetic number, because the mean of its divisors is an integer number (146146320).

Almost surely, 2^511512113 is an apocalyptic number.

It is an amenable number.

511512113 is a deficient number, since it is larger than the sum of its proper divisors (73073167).

511512113 is an equidigital number, since it uses as much as digits as its factorization.

511512113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73073166.

The product of its digits is 150, while the sum is 20.

The square root of 511512113 is about 22616.6335470158. The cubic root of 511512113 is about 799.7458114313.

Adding to 511512113 its reverse (311215115), we get a palindrome (822727228).

The spelling of 511512113 in words is "five hundred eleven million, five hundred twelve thousand, one hundred thirteen".