2057457 has 4 divisors (see below), whose sum is σ = 2743280. Its totient is φ = 1371636.

The previous prime is 2057441. The next prime is 2057477. The reversal of 2057457 is 7547502.

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 not a de Polignac number, because 2057457 - 2⁴ = 2057441 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2057477) 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, 342907 + ... + 342912.

It is an arithmetic number, because the mean of its divisors is an integer number (685820).

2^2057457 is an apocalyptic number.

It is an amenable number.

2057457 is a deficient number, since it is larger than the sum of its proper divisors (685823).

2057457 is an equidigital number, since it uses as much as digits as its factorization.

2057457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685822.

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 2057457 is about 1434.3838398420. The cubic root of 2057457 is about 127.1872534793.

It can be divided in two parts, 2057 and 457, that multiplied together give a palindrome (940049).

The spelling of 2057457 in words is "two million, fifty-seven thousand, four hundred fifty-seven".