551216312 has 32 divisors (see below), whose sum is σ = 1059239280. Its totient is φ = 268773120.

The previous prime is 551216293. The next prime is 551216327. The reversal of 551216312 is 213612155.

It is a super-2 number, since 2×551216312² = 607678845229762688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416612 + ... + 417932.

Almost surely, 2^551216312 is an apocalyptic number.

It is an amenable number.

551216312 is a deficient number, since it is larger than the sum of its proper divisors (508022968).

551216312 is a wasteful number, since it uses less digits than its factorization.

551216312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583 (or 2579 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 551216312 is about 23477.9963369961. The cubic root of 551216312 is about 819.9247957999.

Adding to 551216312 its reverse (213612155), we get a palindrome (764828467).

The spelling of 551216312 in words is "five hundred fifty-one million, two hundred sixteen thousand, three hundred twelve".