2555243 has 4 divisors (see below), whose sum is σ = 2617608. Its totient is φ = 2492880.

The previous prime is 2555233. The next prime is 2555251. The reversal of 2555243 is 3425552.

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

It is a cyclic number.

It is not a de Polignac number, because 2555243 - 2⁴ = 2555227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2555213) 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, 31121 + ... + 31202.

It is an arithmetic number, because the mean of its divisors is an integer number (654402).

2^2555243 is an apocalyptic number.

2555243 is a deficient number, since it is larger than the sum of its proper divisors (62365).

2555243 is an equidigital number, since it uses as much as digits as its factorization.

2555243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62364.

The product of its digits is 6000, while the sum is 26.

The square root of 2555243 is about 1598.5127462739. The cubic root of 2555243 is about 136.7132903257.

The spelling of 2555243 in words is "two million, five hundred fifty-five thousand, two hundred forty-three".