551441243 has 4 divisors (see below), whose sum is σ = 556321368. Its totient is φ = 546561120.

The previous prime is 551441221. The next prime is 551441249. The reversal of 551441243 is 342144155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342144155 = 5 ⋅68428831.

It is a cyclic number.

It is not a de Polignac number, because 551441243 - 2⁶ = 551441179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551441249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2439893 + ... + 2440118.

It is an arithmetic number, because the mean of its divisors is an integer number (139080342).

Almost surely, 2^551441243 is an apocalyptic number.

551441243 is a deficient number, since it is larger than the sum of its proper divisors (4880125).

551441243 is a wasteful number, since it uses less digits than its factorization.

551441243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4880124.

The product of its digits is 9600, while the sum is 29.

The square root of 551441243 is about 23482.7860996092. The cubic root of 551441243 is about 820.0363076329.

Adding to 551441243 its reverse (342144155), we get a palindrome (893585398).

The spelling of 551441243 in words is "five hundred fifty-one million, four hundred forty-one thousand, two hundred forty-three".