511223105552 has 20 divisors (see below), whose sum is σ = 990576994476. Its totient is φ = 255590332800.

The previous prime is 511223105513. The next prime is 511223105557. The reversal of 511223105552 is 255501322115.

It can be written as a sum of positive squares in 2 ways, for example, as 427004743936 + 84218361616 = 653456^2 + 290204^2 .

It is a super-2 number, since 2×511223105552² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (511223105557) 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, 1126583 + ... + 1513814.

Almost surely, 2^511223105552 is an apocalyptic number.

It is an amenable number.

511223105552 is a deficient number, since it is larger than the sum of its proper divisors (479353888924).

511223105552 is a wasteful number, since it uses less digits than its factorization.

511223105552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652506 (or 2652500 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

Adding to 511223105552 its reverse (255501322115), we get a palindrome (766724427667).

The spelling of 511223105552 in words is "five hundred eleven billion, two hundred twenty-three million, one hundred five thousand, five hundred fifty-two".