512215412 has 6 divisors (see below), whose sum is σ = 896376978. Its totient is φ = 256107704.

The previous prime is 512215397. The next prime is 512215421. The reversal of 512215412 is 214512215.

It can be written as a sum of positive squares in only one way, i.e., 441588196 + 70627216 = 21014^2 + 8404^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64026923 + ... + 64026930.

It is an arithmetic number, because the mean of its divisors is an integer number (149396163).

Almost surely, 2^512215412 is an apocalyptic number.

It is an amenable number.

512215412 is a deficient number, since it is larger than the sum of its proper divisors (384161566).

512215412 is a wasteful number, since it uses less digits than its factorization.

512215412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128053857 (or 128053855 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 512215412 is about 22632.1764750985. The cubic root of 512215412 is about 800.1121780194.

Adding to 512215412 its reverse (214512215), we get a palindrome (726727627).

The spelling of 512215412 in words is "five hundred twelve million, two hundred fifteen thousand, four hundred twelve".