74209253 has 2 divisors, whose sum is σ = 74209254. Its totient is φ = 74209252.

The previous prime is 74209243. The next prime is 74209279. The reversal of 74209253 is 35290247.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66552964 + 7656289 = 8158^2 + 2767^2 .

It is a cyclic number.

It is not a de Polignac number, because 74209253 - 2⁶ = 74209189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74209243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37104626 + 37104627.

It is an arithmetic number, because the mean of its divisors is an integer number (37104627).

Almost surely, 2^74209253 is an apocalyptic number.

It is an amenable number.

74209253 is a deficient number, since it is larger than the sum of its proper divisors (1).

74209253 is an equidigital number, since it uses as much as digits as its factorization.

74209253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 74209253 is about 8614.4792645870. The cubic root of 74209253 is about 420.2290002120.

The spelling of 74209253 in words is "seventy-four million, two hundred nine thousand, two hundred fifty-three".