2657855 has 4 divisors (see below), whose sum is σ = 3189432. Its totient is φ = 2126280.

The previous prime is 2657843. The next prime is 2657861. The reversal of 2657855 is 5587562.

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

It is not a de Polignac number, because 2657855 - 2¹⁰ = 2656831 is a prime.

It is a Duffinian 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, 265781 + ... + 265790.

It is an arithmetic number, because the mean of its divisors is an integer number (797358).

2^2657855 is an apocalyptic number.

2657855 is a deficient number, since it is larger than the sum of its proper divisors (531577).

2657855 is an equidigital number, since it uses as much as digits as its factorization.

2657855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531576.

The product of its digits is 84000, while the sum is 38.

The square root of 2657855 is about 1630.2929184659. The cubic root of 2657855 is about 138.5193446112.

The spelling of 2657855 in words is "two million, six hundred fifty-seven thousand, eight hundred fifty-five".