1245589 has 2 divisors, whose sum is σ = 1245590. Its totient is φ = 1245588.

The previous prime is 1245557. The next prime is 1245613. The reversal of 1245589 is 9855421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 864900 + 380689 = 930^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245589 - 2⁵ = 1245557 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245509) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622794 + 622795.

It is an arithmetic number, because the mean of its divisors is an integer number (622795).

2^1245589 is an apocalyptic number.

It is an amenable number.

1245589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245589 is an equidigital number, since it uses as much as digits as its factorization.

1245589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 34.

The square root of 1245589 is about 1116.0595862229. The cubic root of 1245589 is about 107.5948756790.

It can be divided in two parts, 12455 and 89, that added together give a square (12544 = 112²).

The spelling of 1245589 in words is "one million, two hundred forty-five thousand, five hundred eighty-nine".