551418229 has 2 divisors, whose sum is σ = 551418230. Its totient is φ = 551418228.

The previous prime is 551418227. The next prime is 551418313. The reversal of 551418229 is 922814155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 450415729 + 101002500 = 21223^2 + 10050^2 .

It is a cyclic number.

It is not a de Polignac number, because 551418229 - 2¹ = 551418227 is a prime.

Together with 551418227, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551418227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275709114 + 275709115.

It is an arithmetic number, because the mean of its divisors is an integer number (275709115).

Almost surely, 2^551418229 is an apocalyptic number.

It is an amenable number.

551418229 is a deficient number, since it is larger than the sum of its proper divisors (1).

551418229 is an equidigital number, since it uses as much as digits as its factorization.

551418229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 37.

The square root of 551418229 is about 23482.2960759803. The cubic root of 551418229 is about 820.0248996008.

The spelling of 551418229 in words is "five hundred fifty-one million, four hundred eighteen thousand, two hundred twenty-nine".