551204243 has 8 divisors (see below), whose sum is σ = 592340112. Its totient is φ = 511036416.

The previous prime is 551204221. The next prime is 551204279. The reversal of 551204243 is 342402155.

It is a happy number.

551204243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551204243 - 2⁶ = 551204179 is a prime.

It is a super-2 number, since 2×551204243² = 607652235002406098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (551204443) 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, 240830 + ... + 243107.

It is an arithmetic number, because the mean of its divisors is an integer number (74042514).

Almost surely, 2^551204243 is an apocalyptic number.

551204243 is a deficient number, since it is larger than the sum of its proper divisors (41135869).

551204243 is a wasteful number, since it uses less digits than its factorization.

551204243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484021.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 551204243 is about 23477.7393076931. The cubic root of 551204243 is about 819.9188116128.

Adding to 551204243 its reverse (342402155), we get a palindrome (893606398).

The spelling of 551204243 in words is "five hundred fifty-one million, two hundred four thousand, two hundred forty-three".