511432873 has 4 divisors (see below), whose sum is σ = 584494720. Its totient is φ = 438371028.

The previous prime is 511432871. The next prime is 511432931. The reversal of 511432873 is 378234115.

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 511432873 - 2¹ = 511432871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511432871) 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, 36530913 + ... + 36530926.

It is an arithmetic number, because the mean of its divisors is an integer number (146123680).

Almost surely, 2^511432873 is an apocalyptic number.

It is an amenable number.

511432873 is a deficient number, since it is larger than the sum of its proper divisors (73061847).

511432873 is an equidigital number, since it uses as much as digits as its factorization.

511432873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73061846.

The product of its digits is 20160, while the sum is 34.

The square root of 511432873 is about 22614.8816711474. The cubic root of 511432873 is about 799.7045122263.

Adding to 511432873 its reverse (378234115), we get a palindrome (889666988).

The spelling of 511432873 in words is "five hundred eleven million, four hundred thirty-two thousand, eight hundred seventy-three".