1157489 has 2 divisors, whose sum is σ = 1157490. Its totient is φ = 1157488.

The previous prime is 1157449. The next prime is 1157491. The reversal of 1157489 is 9847511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667489 + 490000 = 817^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1157489 - 2¹² = 1153393 is a prime.

Together with 1157491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1157449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578744 + 578745.

It is an arithmetic number, because the mean of its divisors is an integer number (578745).

2^1157489 is an apocalyptic number.

It is an amenable number.

1157489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157489 is an equidigital number, since it uses as much as digits as its factorization.

1157489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 35.

The square root of 1157489 is about 1075.8666274218. The cubic root of 1157489 is about 104.9958879720.

The spelling of 1157489 in words is "one million, one hundred fifty-seven thousand, four hundred eighty-nine".