511530213 has 4 divisors (see below), whose sum is σ = 682040288. Its totient is φ = 341020140.

The previous prime is 511530211. The next prime is 511530223. The reversal of 511530213 is 312035115.

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 not a de Polignac number, because 511530213 - 2¹ = 511530211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 511530213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511530211) 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, 85255033 + ... + 85255038.

It is an arithmetic number, because the mean of its divisors is an integer number (170510072).

Almost surely, 2^511530213 is an apocalyptic number.

It is an amenable number.

511530213 is a deficient number, since it is larger than the sum of its proper divisors (170510075).

511530213 is a wasteful number, since it uses less digits than its factorization.

511530213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170510074.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 511530213 is about 22617.0336914459. The cubic root of 511530213 is about 799.7552443968.

Adding to 511530213 its reverse (312035115), we get a palindrome (823565328).

The spelling of 511530213 in words is "five hundred eleven million, five hundred thirty thousand, two hundred thirteen".