74371321 has 2 divisors, whose sum is σ = 74371322. Its totient is φ = 74371320.

The previous prime is 74371223. The next prime is 74371357. The reversal of 74371321 is 12317347.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68558400 + 5812921 = 8280^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 74371321 - 2²⁵ = 40816889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74371321.

It is not a weakly prime, because it can be changed into another prime (74371391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37185660 + 37185661.

It is an arithmetic number, because the mean of its divisors is an integer number (37185661).

Almost surely, 2^74371321 is an apocalyptic number.

It is an amenable number.

74371321 is a deficient number, since it is larger than the sum of its proper divisors (1).

74371321 is an equidigital number, since it uses as much as digits as its factorization.

74371321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 28.

The square root of 74371321 is about 8623.8808549284. The cubic root of 74371321 is about 420.5346950390.

Adding to 74371321 its reverse (12317347), we get a palindrome (86688668).

The spelling of 74371321 in words is "seventy-four million, three hundred seventy-one thousand, three hundred twenty-one".