511027321 has 12 divisors (see below), whose sum is σ = 608961780. Its totient is φ = 427338240.

The previous prime is 511027301. The next prime is 511027333. The reversal of 511027321 is 123720115.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 112466025 + 398561296 = 10605^2 + 19964^2 .

It is not a de Polignac number, because 511027321 - 2⁵ = 511027289 is a prime.

It is a super-2 number, since 2×511027321² = 522297845616874082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511027292 and 511027301.

It is not an unprimeable number, because it can be changed into a prime (511027301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125176 + ... + 129193.

It is an arithmetic number, because the mean of its divisors is an integer number (50746815).

Almost surely, 2^511027321 is an apocalyptic number.

It is an amenable number.

511027321 is a deficient number, since it is larger than the sum of its proper divisors (97934459).

511027321 is a wasteful number, since it uses less digits than its factorization.

511027321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254424 (or 254417 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 511027321 is about 22605.9134077789. The cubic root of 511027321 is about 799.4930752061.

Adding to 511027321 its reverse (123720115), we get a palindrome (634747436).

The spelling of 511027321 in words is "five hundred eleven million, twenty-seven thousand, three hundred twenty-one".