1447574221 has 2 divisors, whose sum is σ = 1447574222. Its totient is φ = 1447574220.

The previous prime is 1447574131. The next prime is 1447574239. The reversal of 1447574221 is 1224757441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1368186121 + 79388100 = 36989^2 + 8910^2 .

It is an emirp because it is prime and its reverse (1224757441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1447574221 - 2¹¹ = 1447572173 is a prime.

It is a super-2 number, since 2×1447574221² = 4190942250607513682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1447575221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 723787110 + 723787111.

It is an arithmetic number, because the mean of its divisors is an integer number (723787111).

Almost surely, 2^1447574221 is an apocalyptic number.

It is an amenable number.

1447574221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1447574221 is an equidigital number, since it uses as much as digits as its factorization.

1447574221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62720, while the sum is 37.

The square root of 1447574221 is about 38047.0001576997. Note that the first 3 decimals coincide. The cubic root of 1447574221 is about 1131.2196664495.

The spelling of 1447574221 in words is "one billion, four hundred forty-seven million, five hundred seventy-four thousand, two hundred twenty-one".