7213841 has 2 divisors, whose sum is σ = 7213842. Its totient is φ = 7213840.

The previous prime is 7213819. The next prime is 7213847. The reversal of 7213841 is 1483127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4857616 + 2356225 = 2204^2 + 1535^2 .

It is a cyclic number.

It is not a de Polignac number, because 7213841 - 2¹⁴ = 7197457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7213841.

It is not a weakly prime, because it can be changed into another prime (7213847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3606920 + 3606921.

It is an arithmetic number, because the mean of its divisors is an integer number (3606921).

Almost surely, 2^7213841 is an apocalyptic number.

It is an amenable number.

7213841 is a deficient number, since it is larger than the sum of its proper divisors (1).

7213841 is an equidigital number, since it uses as much as digits as its factorization.

7213841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 26.

The square root of 7213841 is about 2685.8594527637. The cubic root of 7213841 is about 193.2215323346.

Adding to 7213841 its reverse (1483127), we get a palindrome (8696968).

The spelling of 7213841 in words is "seven million, two hundred thirteen thousand, eight hundred forty-one".