1057257 has 12 divisors (see below), whose sum is σ = 1547520. Its totient is φ = 695448.

The previous prime is 1057249. The next prime is 1057271. The reversal of 1057257 is 7527501.

It is not a de Polignac number, because 1057257 - 2³ = 1057249 is a prime.

It is a super-2 number, since 2×1057257² = 2235584728098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1057257.

It is not an unprimeable number, because it can be changed into a prime (1057237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33 + ... + 1454.

It is an arithmetic number, because the mean of its divisors is an integer number (128960).

2^1057257 is an apocalyptic number.

It is an amenable number.

1057257 is a deficient number, since it is larger than the sum of its proper divisors (490263).

1057257 is a wasteful number, since it uses less digits than its factorization.

1057257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572 (or 1569 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 1057257 is about 1028.2300326289. The cubic root of 1057257 is about 101.8732566477.

The spelling of 1057257 in words is "one million, fifty-seven thousand, two hundred fifty-seven".