512305222 has 16 divisors (see below), whose sum is σ = 902804112. Its totient is φ = 214953120.

The previous prime is 512305181. The next prime is 512305223. The reversal of 512305222 is 222503215.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 512305193 and 512305202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512305223) 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, 895353 + ... + 895924.

It is an arithmetic number, because the mean of its divisors is an integer number (56425257).

Almost surely, 2^512305222 is an apocalyptic number.

512305222 is a deficient number, since it is larger than the sum of its proper divisors (390498890).

512305222 is a wasteful number, since it uses less digits than its factorization.

512305222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791303.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 512305222 is about 22634.1605101669. The cubic root of 512305222 is about 800.1589382129.

Adding to 512305222 its reverse (222503215), we get a palindrome (734808437).

The spelling of 512305222 in words is "five hundred twelve million, three hundred five thousand, two hundred twenty-two".