551223200 has 72 divisors (see below), whose sum is σ = 1468031040. Its totient is φ = 200441600.

The previous prime is 551223187. The next prime is 551223203. The reversal of 551223200 is 2322155.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (551223203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22520 + ... + 40119.

It is an arithmetic number, because the mean of its divisors is an integer number (20389320).

Almost surely, 2^551223200 is an apocalyptic number.

551223200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551223200 is an abundant number, since it is smaller than the sum of its proper divisors (916807840).

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

551223200 is a wasteful number, since it uses less digits than its factorization.

551223200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62670 (or 62657 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 551223200 is about 23478.1430270795. The cubic root of 551223200 is about 819.9282110462.

Adding to 551223200 its reverse (2322155), we get a palindrome (553545355).

The spelling of 551223200 in words is "five hundred fifty-one million, two hundred twenty-three thousand, two hundred".