511230733 has 6 divisors (see below), whose sum is σ = 550643982. Its totient is φ = 471830040.

The previous prime is 511230721. The next prime is 511230757. The reversal of 511230733 is 337032115.

It can be written as a sum of positive squares in only one way, i.e., 353928969 + 157301764 = 18813^2 + 12542^2 .

It is not a de Polignac number, because 511230733 - 2¹⁷ = 511099661 is a prime.

It is a super-2 number, since 2×511230733² = 522713724727434578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 511230698 and 511230707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511230773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78388 + ... + 84658.

It is an arithmetic number, because the mean of its divisors is an integer number (91773997).

Almost surely, 2^511230733 is an apocalyptic number.

It is an amenable number.

511230733 is a deficient number, since it is larger than the sum of its proper divisors (39413249).

511230733 is an frugal number, since it uses more digits than its factorization.

511230733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12555 (or 6284 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 511230733 is about 22610.4120484347. The cubic root of 511230733 is about 799.5991392761.

Adding to 511230733 its reverse (337032115), we get a palindrome (848262848).

The spelling of 511230733 in words is "five hundred eleven million, two hundred thirty thousand, seven hundred thirty-three".