1455447121 has 2 divisors, whose sum is σ = 1455447122. Its totient is φ = 1455447120.

The previous prime is 1455447089. The next prime is 1455447131. The reversal of 1455447121 is 1217445541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1092963600 + 362483521 = 33060^2 + 19039^2 .

It is a cyclic number.

It is not a de Polignac number, because 1455447121 - 2⁵ = 1455447089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1455447131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727723560 + 727723561.

It is an arithmetic number, because the mean of its divisors is an integer number (727723561).

Almost surely, 2^1455447121 is an apocalyptic number.

It is an amenable number.

1455447121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1455447121 is an equidigital number, since it uses as much as digits as its factorization.

1455447121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 34.

The square root of 1455447121 is about 38150.3226853981. The cubic root of 1455447121 is about 1133.2667422139.

The spelling of 1455447121 in words is "one billion, four hundred fifty-five million, four hundred forty-seven thousand, one hundred twenty-one".