7255489 has 2 divisors, whose sum is σ = 7255490. Its totient is φ = 7255488.

The previous prime is 7255487. The next prime is 7255499. The reversal of 7255489 is 9845527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5253264 + 2002225 = 2292^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 7255489 - 2¹ = 7255487 is a prime.

Together with 7255487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7255487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3627744 + 3627745.

It is an arithmetic number, because the mean of its divisors is an integer number (3627745).

Almost surely, 2^7255489 is an apocalyptic number.

It is an amenable number.

7255489 is a deficient number, since it is larger than the sum of its proper divisors (1).

7255489 is an equidigital number, since it uses as much as digits as its factorization.

7255489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 40.

The square root of 7255489 is about 2693.6014924261. The cubic root of 7255489 is about 193.5926639441.

It can be divided in two parts, 7255 and 489, that added together give a square (7744 = 88²).

The spelling of 7255489 in words is "seven million, two hundred fifty-five thousand, four hundred eighty-nine".