1051643 has 2 divisors, whose sum is σ = 1051644. Its totient is φ = 1051642.

The previous prime is 1051639. The next prime is 1051649. The reversal of 1051643 is 3461501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1051643 - 2² = 1051639 is a prime.

It is a super-2 number, since 2×1051643² = 2211905998898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1051649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525821 + 525822.

It is an arithmetic number, because the mean of its divisors is an integer number (525822).

2^1051643 is an apocalyptic number.

1051643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051643 is an equidigital number, since it uses as much as digits as its factorization.

1051643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1051643 is about 1025.4964651329. The cubic root of 1051643 is about 101.6926219974.

The spelling of 1051643 in words is "one million, fifty-one thousand, six hundred forty-three".