1447150021 has 2 divisors, whose sum is σ = 1447150022. Its totient is φ = 1447150020.

The previous prime is 1447150009. The next prime is 1447150039. The reversal of 1447150021 is 1200517441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1067328900 + 379821121 = 32670^2 + 19489^2 .

It is a cyclic number.

It is not a de Polignac number, because 1447150021 - 2²³ = 1438761413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1447150051) 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, 723575010 + 723575011.

It is an arithmetic number, because the mean of its divisors is an integer number (723575011).

Almost surely, 2^1447150021 is an apocalyptic number.

It is an amenable number.

1447150021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1447150021 is an equidigital number, since it uses as much as digits as its factorization.

1447150021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1447150021 is about 38041.4250653153. The cubic root of 1447150021 is about 1131.1091573748.

Adding to 1447150021 its reverse (1200517441), we get a palindrome (2647667462).

The spelling of 1447150021 in words is "one billion, four hundred forty-seven million, one hundred fifty thousand, twenty-one".