1057285 has 4 divisors (see below), whose sum is σ = 1268748. Its totient is φ = 845824.

The previous prime is 1057279. The next prime is 1057291. The reversal of 1057285 is 5827501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5827501 = 461 ⋅12641.

It is an interprime number because it is at equal distance from previous prime (1057279) and next prime (1057291).

It can be written as a sum of positive squares in 2 ways, for example, as 199809 + 857476 = 447^2 + 926^2 .

It is a cyclic number.

It is not a de Polignac number, because 1057285 - 2⁷ = 1057157 is a prime.

It is a super-2 number, since 2×1057285² = 2235703142450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105724 + ... + 105733.

It is an arithmetic number, because the mean of its divisors is an integer number (317187).

2^1057285 is an apocalyptic number.

It is an amenable number.

1057285 is a deficient number, since it is larger than the sum of its proper divisors (211463).

1057285 is an equidigital number, since it uses as much as digits as its factorization.

1057285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211462.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 1057285 is about 1028.2436481691. The cubic root of 1057285 is about 101.8741559643.

The spelling of 1057285 in words is "one million, fifty-seven thousand, two hundred eighty-five".