1057205 has 4 divisors (see below), whose sum is σ = 1268652. Its totient is φ = 845760.

The previous prime is 1057183. The next prime is 1057219. The reversal of 1057205 is 5027501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148996 + 908209 = 386^2 + 953^2 .

It is not a de Polignac number, because 1057205 - 2⁸ = 1056949 is a prime.

It is a super-2 number, since 2×1057205² = 2235364824050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105716 + ... + 105725.

It is an arithmetic number, because the mean of its divisors is an integer number (317163).

2^1057205 is an apocalyptic number.

It is an amenable number.

1057205 is a deficient number, since it is larger than the sum of its proper divisors (211447).

1057205 is an equidigital number, since it uses as much as digits as its factorization.

1057205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211446.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 1057205 is about 1028.2047461474. The cubic root of 1057205 is about 101.8715864464.

The spelling of 1057205 in words is "one million, fifty-seven thousand, two hundred five".