1057831 has 2 divisors, whose sum is σ = 1057832. Its totient is φ = 1057830.

The previous prime is 1057807. The next prime is 1057853. The reversal of 1057831 is 1387501.

It is a strong prime.

It is an emirp because it is prime and its reverse (1387501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1057831 - 2⁷ = 1057703 is a prime.

It is a super-2 number, since 2×1057831² = 2238012849122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1057796 and 1057805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1057531) 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, 528915 + 528916.

It is an arithmetic number, because the mean of its divisors is an integer number (528916).

2^1057831 is an apocalyptic number.

1057831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1057831 is an equidigital number, since it uses as much as digits as its factorization.

1057831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1057831 is about 1028.5091151759. The cubic root of 1057831 is about 101.8916894634.

It can be divided in two parts, 10578 and 31, that added together give a square (10609 = 103²).

The spelling of 1057831 in words is "one million, fifty-seven thousand, eight hundred thirty-one".