2555257 has 4 divisors (see below), whose sum is σ = 2624356. Its totient is φ = 2486160.

The previous prime is 2555251. The next prime is 2555261. The reversal of 2555257 is 7525552.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2013561 + 541696 = 1419^2 + 736^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555257 - 2⁷ = 2555129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2555251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34494 + ... + 34567.

It is an arithmetic number, because the mean of its divisors is an integer number (656089).

2^2555257 is an apocalyptic number.

It is an amenable number.

2555257 is a deficient number, since it is larger than the sum of its proper divisors (69099).

2555257 is an equidigital number, since it uses as much as digits as its factorization.

2555257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69098.

The product of its digits is 17500, while the sum is 31.

The square root of 2555257 is about 1598.5171253384. The cubic root of 2555257 is about 136.7135400061.

The spelling of 2555257 in words is "two million, five hundred fifty-five thousand, two hundred fifty-seven".