2057455 has 4 divisors (see below), whose sum is σ = 2468952. Its totient is φ = 1645960.

The previous prime is 2057441. The next prime is 2057477. The reversal of 2057455 is 5547502.

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

It is not a de Polignac number, because 2057455 - 2¹³ = 2049263 is a prime.

It is a Duffinian number.

2057455 is a lucky 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, 205741 + ... + 205750.

It is an arithmetic number, because the mean of its divisors is an integer number (617238).

2^2057455 is an apocalyptic number.

2057455 is a deficient number, since it is larger than the sum of its proper divisors (411497).

2057455 is an equidigital number, since it uses as much as digits as its factorization.

2057455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411496.

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 2057455 is about 1434.3831426784. The cubic root of 2057455 is about 127.1872122675.

It can be divided in two parts, 20 and 57455, that added together give a palindrome (57475).

The spelling of 2057455 in words is "two million, fifty-seven thousand, four hundred fifty-five".