549965231 has 2 divisors, whose sum is σ = 549965232. Its totient is φ = 549965230.

The previous prime is 549965183. The next prime is 549965233. The reversal of 549965231 is 132569945.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549965231 is a prime.

It is a super-2 number, since 2×549965231² = 604923510617766722, which contains 22 as substring.

Together with 549965233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549965233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274982615 + 274982616.

It is an arithmetic number, because the mean of its divisors is an integer number (274982616).

Almost surely, 2^549965231 is an apocalyptic number.

549965231 is a deficient number, since it is larger than the sum of its proper divisors (1).

549965231 is an equidigital number, since it uses as much as digits as its factorization.

549965231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 44.

The square root of 549965231 is about 23451.3375098309. The cubic root of 549965231 is about 819.3040053997.

The spelling of 549965231 in words is "five hundred forty-nine million, nine hundred sixty-five thousand, two hundred thirty-one".