2555749 has 4 divisors (see below), whose sum is σ = 2920864. Its totient is φ = 2190636.

The previous prime is 2555731. The next prime is 2555753. The reversal of 2555749 is 9475552.

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 not a de Polignac number, because 2555749 - 2¹¹ = 2553701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555779) 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, 182547 + ... + 182560.

It is an arithmetic number, because the mean of its divisors is an integer number (730216).

2^2555749 is an apocalyptic number.

It is an amenable number.

2555749 is a deficient number, since it is larger than the sum of its proper divisors (365115).

2555749 is an equidigital number, since it uses as much as digits as its factorization.

2555749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365114.

The product of its digits is 63000, while the sum is 37.

The square root of 2555749 is about 1598.6710105585. The cubic root of 2555749 is about 136.7223139109.

The spelling of 2555749 in words is "two million, five hundred fifty-five thousand, seven hundred forty-nine".