2091255 has 32 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 1024512.

The previous prime is 2091251. The next prime is 2091269. The reversal of 2091255 is 5521902.

It is not a de Polignac number, because 2091255 - 2² = 2091251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14976 + ... + 15114.

It is an arithmetic number, because the mean of its divisors is an integer number (113400).

2^2091255 is an apocalyptic number.

2091255 is a deficient number, since it is larger than the sum of its proper divisors (1537545).

2091255 is a wasteful number, since it uses less digits than its factorization.

2091255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 2091255 is about 1446.1172151662. The cubic root of 2091255 is about 127.8799125992.

It can be divided in two parts, 2091 and 255, that added together give a triangular number (2346 = T₆₈).

The spelling of 2091255 in words is "two million, ninety-one thousand, two hundred fifty-five".