2057655 has 8 divisors (see below), whose sum is σ = 3292272. Its totient is φ = 1097408.

The previous prime is 2057639. The next prime is 2057659. The reversal of 2057655 is 5567502.

2057655 is nontrivially palindromic in base 8.

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 2057655 - 2⁴ = 2057639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68574 + ... + 68603.

It is an arithmetic number, because the mean of its divisors is an integer number (411534).

2^2057655 is an apocalyptic number.

2057655 is a deficient number, since it is larger than the sum of its proper divisors (1234617).

2057655 is a wasteful number, since it uses less digits than its factorization.

2057655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137185.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 2057655 is about 1434.4528573641. The cubic root of 2057655 is about 127.1913333164.

It can be divided in two parts, 20 and 57655, that added together give a palindrome (57675).

The spelling of 2057655 in words is "two million, fifty-seven thousand, six hundred fifty-five".