551224212 has 144 divisors (see below), whose sum is σ = 1629860736. Its totient is φ = 141926400.

The previous prime is 551224189. The next prime is 551224217. The reversal of 551224212 is 212422155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551224217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1961512 + ... + 1961792.

Almost surely, 2^551224212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551224212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (814930368).

551224212 is an abundant number, since it is smaller than the sum of its proper divisors (1078636524).

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

551224212 is a wasteful number, since it uses less digits than its factorization.

551224212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 497 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 551224212 is about 23478.1645790296. The cubic root of 551224212 is about 819.9287128192.

Adding to 551224212 its reverse (212422155), we get a palindrome (763646367).

The spelling of 551224212 in words is "five hundred fifty-one million, two hundred twenty-four thousand, two hundred twelve".