7443481 has 2 divisors, whose sum is σ = 7443482. Its totient is φ = 7443480.

The previous prime is 7443473. The next prime is 7443487. The reversal of 7443481 is 1843447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7209225 + 234256 = 2685^2 + 484^2 .

It is an emirp because it is prime and its reverse (1843447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7443481 - 2³ = 7443473 is a prime.

It is a super-2 number, since 2×7443481² = 110810818794722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7443487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3721740 + 3721741.

It is an arithmetic number, because the mean of its divisors is an integer number (3721741).

Almost surely, 2^7443481 is an apocalyptic number.

It is an amenable number.

7443481 is a deficient number, since it is larger than the sum of its proper divisors (1).

7443481 is an equidigital number, since it uses as much as digits as its factorization.

7443481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 31.

The square root of 7443481 is about 2728.2743630361. The cubic root of 7443481 is about 195.2504430601.

It can be divided in two parts, 744 and 3481, that added together give a square (4225 = 65²).

The spelling of 7443481 in words is "seven million, four hundred forty-three thousand, four hundred eighty-one".