2057557 has 4 divisors (see below), whose sum is σ = 2147040. Its totient is φ = 1968076.

The previous prime is 2057543. The next prime is 2057569. The reversal of 2057557 is 7557502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2057557 - 2¹¹ = 2055509 is a prime.

It is a d-powerful number, because it can be written as 2¹² + 0 + 5³ + 7⁷ + 5⁶ + 5⁸ + 7⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44707 + ... + 44752.

It is an arithmetic number, because the mean of its divisors is an integer number (536760).

2^2057557 is an apocalyptic number.

It is an amenable number.

2057557 is a deficient number, since it is larger than the sum of its proper divisors (89483).

2057557 is an equidigital number, since it uses as much as digits as its factorization.

2057557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89482.

The product of its (nonzero) digits is 12250, while the sum is 31.

The square root of 2057557 is about 1434.4186975915. The cubic root of 2057557 is about 127.1893140358.

Subtracting 2057557 from its reverse (7557502), we obtain a palindrome (5499945).

The spelling of 2057557 in words is "two million, fifty-seven thousand, five hundred fifty-seven".