2661255 has 20 divisors (see below), whose sum is σ = 4771272. Its totient is φ = 1419120.

The previous prime is 2661251. The next prime is 2661271. The reversal of 2661255 is 5521662.

2661255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2661255 - 2² = 2661251 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2881 + ... + 3690.

2^2661255 is an apocalyptic number.

2661255 is a deficient number, since it is larger than the sum of its proper divisors (2110017).

2661255 is an equidigital number, since it uses as much as digits as its factorization.

2661255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6588 (or 6579 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2661255 is about 1631.3353425951. The cubic root of 2661255 is about 138.5783853402.

It can be divided in two parts, 2661 and 255, that added together give a square (2916 = 54²).

The spelling of 2661255 in words is "two million, six hundred sixty-one thousand, two hundred fifty-five".