551315243 has 2 divisors, whose sum is σ = 551315244. Its totient is φ = 551315242.

The previous prime is 551315239. The next prime is 551315249. The reversal of 551315243 is 342513155.

551315243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551315243 - 2² = 551315239 is a prime.

It is not a weakly prime, because it can be changed into another prime (551315249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275657621 + 275657622.

It is an arithmetic number, because the mean of its divisors is an integer number (275657622).

Almost surely, 2^551315243 is an apocalyptic number.

551315243 is a deficient number, since it is larger than the sum of its proper divisors (1).

551315243 is an equidigital number, since it uses as much as digits as its factorization.

551315243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 29.

The square root of 551315243 is about 23480.1031300972. The cubic root of 551315243 is about 819.9738455866.

Adding to 551315243 its reverse (342513155), we get a palindrome (893828398).

The spelling of 551315243 in words is "five hundred fifty-one million, three hundred fifteen thousand, two hundred forty-three".