511530 has 48 divisors (see below), whose sum is σ = 1326240. Its totient is φ = 126208.

The previous prime is 511523. The next prime is 511541. The reversal of 511530 is 35115.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 511530.

It is an unprimeable number.

511530 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8641 + ... + 8699.

It is an arithmetic number, because the mean of its divisors is an integer number (27630).

2⁵¹¹⁵³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 511530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663120).

511530 is an abundant number, since it is smaller than the sum of its proper divisors (814710).

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

511530 is a wasteful number, since it uses less digits than its factorization.

511530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 511530 is about 715.2132549107. The cubic root of 511530 is about 79.9755133391.

Adding to 511530 its reverse (35115), we get a palindrome (546645).

The spelling of 511530 in words is "five hundred eleven thousand, five hundred thirty".