7245409 has 2 divisors, whose sum is σ = 7245410. Its totient is φ = 7245408.

The previous prime is 7245373. The next prime is 7245439. The reversal of 7245409 is 9045427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4774225 + 2471184 = 2185^2 + 1572^2 .

It is a cyclic number.

It is not a de Polignac number, because 7245409 - 2²¹ = 5148257 is a prime.

It is a Chen prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (7245439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3622704 + 3622705.

It is an arithmetic number, because the mean of its divisors is an integer number (3622705).

Almost surely, 2^7245409 is an apocalyptic number.

It is an amenable number.

7245409 is a deficient number, since it is larger than the sum of its proper divisors (1).

7245409 is an equidigital number, since it uses as much as digits as its factorization.

7245409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 7245409 is about 2691.7297412630. The cubic root of 7245409 is about 193.5029700840.

The spelling of 7245409 in words is "seven million, two hundred forty-five thousand, four hundred nine".