511320552 has 32 divisors (see below), whose sum is σ = 1345581600. Its totient is φ = 161469504.

The previous prime is 511320539. The next prime is 511320559. The reversal of 511320552 is 255023115.

It is a happy number.

It is a super-2 number, since 2×511320552² = 522897413795169408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (511320559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560203 + ... + 561114.

It is an arithmetic number, because the mean of its divisors is an integer number (42049425).

Almost surely, 2^511320552 is an apocalyptic number.

It is an amenable number.

511320552 is an abundant number, since it is smaller than the sum of its proper divisors (834261048).

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

511320552 is a wasteful number, since it uses less digits than its factorization.

511320552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121345 (or 1121341 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 511320552 is about 22612.3981921423. The cubic root of 511320552 is about 799.6459641797.

Adding to 511320552 its reverse (255023115), we get a palindrome (766343667).

The spelling of 511320552 in words is "five hundred eleven million, three hundred twenty thousand, five hundred fifty-two".