1057549 has 4 divisors (see below), whose sum is σ = 1063836. Its totient is φ = 1051264.

The previous prime is 1057541. The next prime is 1057561. The reversal of 1057549 is 9457501.

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 797449 + 260100 = 893^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 1057549 - 2³ = 1057541 is a prime.

It is a super-2 number, since 2×1057549² = 2236819774802, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 0 + 5 + 7⁴ + 5 + 4¹⁰ + 9⁴ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1057549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057541) 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 in 3 ways as a sum of consecutive naturals, for example, 2884 + ... + 3229.

It is an arithmetic number, because the mean of its divisors is an integer number (265959).

2^1057549 is an apocalyptic number.

It is an amenable number.

1057549 is a deficient number, since it is larger than the sum of its proper divisors (6287).

1057549 is an equidigital number, since it uses as much as digits as its factorization.

1057549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6286.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 1057549 is about 1028.3720143995. The cubic root of 1057549 is about 101.8826344536.

The spelling of 1057549 in words is "one million, fifty-seven thousand, five hundred forty-nine".