2555493 has 4 divisors (see below), whose sum is σ = 3407328. Its totient is φ = 1703660.

The previous prime is 2555477. The next prime is 2555521. The reversal of 2555493 is 3945552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2555493 - 2⁴ = 2555477 is a prime.

It is an Ulam number.

It is a D-number.

2555493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555453) 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, 425913 + ... + 425918.

It is an arithmetic number, because the mean of its divisors is an integer number (851832).

2^2555493 is an apocalyptic number.

It is an amenable number.

2555493 is a deficient number, since it is larger than the sum of its proper divisors (851835).

2555493 is an equidigital number, since it uses as much as digits as its factorization.

2555493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851834.

The product of its digits is 27000, while the sum is 33.

The square root of 2555493 is about 1598.5909420487. The cubic root of 2555493 is about 136.7177487676.

It can be divided in two parts, 255549 and 3, that added together give a palindrome (255552).

The spelling of 2555493 in words is "two million, five hundred fifty-five thousand, four hundred ninety-three".