8447573 has 2 divisors, whose sum is σ = 8447574. Its totient is φ = 8447572.

The previous prime is 8447519. The next prime is 8447591. The reversal of 8447573 is 3757448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8427409 + 20164 = 2903^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 8447573 - 2¹⁰ = 8446549 is a prime.

It is a super-2 number, since 2×8447573² = 142722979180658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8447503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4223786 + 4223787.

It is an arithmetic number, because the mean of its divisors is an integer number (4223787).

Almost surely, 2^8447573 is an apocalyptic number.

It is an amenable number.

8447573 is a deficient number, since it is larger than the sum of its proper divisors (1).

8447573 is an equidigital number, since it uses as much as digits as its factorization.

8447573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 38.

The square root of 8447573 is about 2906.4708840792. The cubic root of 8447573 is about 203.6623033338.

It can be divided in two parts, 84475 and 73, that added together give a palindrome (84548).

The spelling of 8447573 in words is "eight million, four hundred forty-seven thousand, five hundred seventy-three".