1057489 has 2 divisors, whose sum is σ = 1057490. Its totient is φ = 1057488.

The previous prime is 1057487. The next prime is 1057493. The reversal of 1057489 is 9847501.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 883600 + 173889 = 940^2 + 417^2 .

It is a cyclic number.

It is not a de Polignac number, because 1057489 - 2¹ = 1057487 is a prime.

It is a super-2 number, since 2×1057489² = 2236565970242, which contains 22 as substring.

Together with 1057487, it forms a pair of twin primes.

It is an Ulam number.

1057489 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1057487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528744 + 528745.

It is an arithmetic number, because the mean of its divisors is an integer number (528745).

2^1057489 is an apocalyptic number.

It is an amenable number.

1057489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1057489 is an equidigital number, since it uses as much as digits as its factorization.

1057489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1057489 is about 1028.3428416632. The cubic root of 1057489 is about 101.8807076481.

The spelling of 1057489 in words is "one million, fifty-seven thousand, four hundred eighty-nine".