1547227049 has 2 divisors, whose sum is σ = 1547227050. Its totient is φ = 1547227048.

The previous prime is 1547226977. The next prime is 1547227051. The reversal of 1547227049 is 9407227451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 804119449 + 743107600 = 28357^2 + 27260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1547227049 is a prime.

Together with 1547227051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1547226997 and 1547227015.

It is not a weakly prime, because it can be changed into another prime (1547227249) 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, 773613524 + 773613525.

It is an arithmetic number, because the mean of its divisors is an integer number (773613525).

Almost surely, 2^1547227049 is an apocalyptic number.

It is an amenable number.

1547227049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1547227049 is an equidigital number, since it uses as much as digits as its factorization.

1547227049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 1547227049 is about 39334.8070924468. The cubic root of 1547227049 is about 1156.6039817517.

The spelling of 1547227049 in words is "one billion, five hundred forty-seven million, two hundred twenty-seven thousand, forty-nine".