2057155 has 8 divisors (see below), whose sum is σ = 2498832. Its totient is φ = 1625568.

The previous prime is 2057147. The next prime is 2057177. The reversal of 2057155 is 5517502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2057155 - 2³ = 2057147 is a prime.

It is a Duffinian number.

2057155 is a lucky number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2064 + ... + 2893.

It is an arithmetic number, because the mean of its divisors is an integer number (312354).

2^2057155 is an apocalyptic number.

2057155 is a deficient number, since it is larger than the sum of its proper divisors (441677).

2057155 is an equidigital number, since it uses as much as digits as its factorization.

2057155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 2057155 is about 1434.2785642964. The cubic root of 2057155 is about 127.1810301933.

It can be divided in two parts, 20 and 57155, that added together give a palindrome (57175).

The spelling of 2057155 in words is "two million, fifty-seven thousand, one hundred fifty-five".