2555165 has 4 divisors (see below), whose sum is σ = 3066204. Its totient is φ = 2044128.

The previous prime is 2555159. The next prime is 2555167. The reversal of 2555165 is 5615552.

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 586756 + 1968409 = 766^2 + 1403^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555165 - 2¹⁰ = 2554141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555167) 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, 255512 + ... + 255521.

It is an arithmetic number, because the mean of its divisors is an integer number (766551).

2^2555165 is an apocalyptic number.

It is an amenable number.

2555165 is a deficient number, since it is larger than the sum of its proper divisors (511039).

2555165 is an equidigital number, since it uses as much as digits as its factorization.

2555165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511038.

The product of its digits is 7500, while the sum is 29.

The square root of 2555165 is about 1598.4883484092. The cubic root of 2555165 is about 136.7118992322.

The spelling of 2555165 in words is "two million, five hundred fifty-five thousand, one hundred sixty-five".