7315489 has 2 divisors, whose sum is σ = 7315490. Its totient is φ = 7315488.

The previous prime is 7315487. The next prime is 7315499. The reversal of 7315489 is 9845137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5953600 + 1361889 = 2440^2 + 1167^2 .

It is a cyclic number.

It is not a de Polignac number, because 7315489 - 2¹ = 7315487 is a prime.

Together with 7315487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7315487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3657744 + 3657745.

It is an arithmetic number, because the mean of its divisors is an integer number (3657745).

Almost surely, 2^7315489 is an apocalyptic number.

It is an amenable number.

7315489 is a deficient number, since it is larger than the sum of its proper divisors (1).

7315489 is an equidigital number, since it uses as much as digits as its factorization.

7315489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 7315489 is about 2704.7160664292. The cubic root of 7315489 is about 194.1248443594.

The spelling of 7315489 in words is "seven million, three hundred fifteen thousand, four hundred eighty-nine".