512524321 has 3 divisors (see below), whose sum is σ = 512546961. Its totient is φ = 512501682.

The previous prime is 512524307. The next prime is 512524343. The reversal of 512524321 is 123425215.

The square root of 512524321 is 22639.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 123425215 = 5 ⋅24685043.

It is not a de Polignac number, because 512524321 - 2⁷ = 512524193 is a prime.

It is a super-2 number, since 2×512524321² = 525362359233022082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512524361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11320 + ... + 33958.

It is an arithmetic number, because the mean of its divisors is an integer number (170848987).

Almost surely, 2^512524321 is an apocalyptic number.

512524321 is the 22639-th square number.

512524321 is the 11320-th centered octagonal number.

It is an amenable number.

512524321 is a deficient number, since it is larger than the sum of its proper divisors (22640).

512524321 is an frugal number, since it uses more digits than its factorization.

512524321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45278 (or 22639 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The cubic root of 512524321 is about 800.2729906887.

Multiplying 512524321 by its sum of digits (25), we get a square (12813108025 = 113195²).

Adding to 512524321 its reverse (123425215), we get a palindrome (635949536).

The spelling of 512524321 in words is "five hundred twelve million, five hundred twenty-four thousand, three hundred twenty-one".