1057643 has 2 divisors, whose sum is σ = 1057644. Its totient is φ = 1057642.

The previous prime is 1057633. The next prime is 1057657. The reversal of 1057643 is 3467501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1057643 - 2⁶ = 1057579 is a prime.

It is a super-2 number, since 2×1057643² = 2237217430898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1057603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528821 + 528822.

It is an arithmetic number, because the mean of its divisors is an integer number (528822).

2^1057643 is an apocalyptic number.

1057643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1057643 is an equidigital number, since it uses as much as digits as its factorization.

1057643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 1057643 is about 1028.4177166891. The cubic root of 1057643 is about 101.8856529691.

The spelling of 1057643 in words is "one million, fifty-seven thousand, six hundred forty-three".