7474321 has 2 divisors, whose sum is σ = 7474322. Its totient is φ = 7474320.

The previous prime is 7474307. The next prime is 7474343. The reversal of 7474321 is 1234747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6890625 + 583696 = 2625^2 + 764^2 .

It is an emirp because it is prime and its reverse (1234747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7474321 - 2⁵ = 7474289 is a prime.

It is a super-2 number, since 2×7474321² = 111730948822082, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 7474321.

It is not a weakly prime, because it can be changed into another prime (7474301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3737160 + 3737161.

It is an arithmetic number, because the mean of its divisors is an integer number (3737161).

Almost surely, 2^7474321 is an apocalyptic number.

It is an amenable number.

7474321 is a deficient number, since it is larger than the sum of its proper divisors (1).

7474321 is an equidigital number, since it uses as much as digits as its factorization.

7474321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 28.

The square root of 7474321 is about 2733.9204450752. The cubic root of 7474321 is about 195.5197268617.

The spelling of 7474321 in words is "seven million, four hundred seventy-four thousand, three hundred twenty-one".