1053691 has 2 divisors, whose sum is σ = 1053692. Its totient is φ = 1053690.

The previous prime is 1053617. The next prime is 1053697. The reversal of 1053691 is 1963501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1053691 - 2⁹ = 1053179 is a prime.

It is a super-2 number, since 2×1053691² = 2220529446962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1053697) 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, 526845 + 526846.

It is an arithmetic number, because the mean of its divisors is an integer number (526846).

2^1053691 is an apocalyptic number.

1053691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1053691 is an equidigital number, since it uses as much as digits as its factorization.

1053691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 1053691 is about 1026.4945201997. The cubic root of 1053691 is about 101.7585922431.

Adding to 1053691 its product of nonzero digits (810), we get a palindrome (1054501).

The spelling of 1053691 in words is "one million, fifty-three thousand, six hundred ninety-one".