2555787 has 18 divisors (see below), whose sum is σ = 3742716. Its totient is φ = 1550640.

The previous prime is 2555779. The next prime is 2555809. The reversal of 2555787 is 7875552.

It is not a de Polignac number, because 2555787 - 2³ = 2555779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2555767) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 35962 + ... + 36032.

2^2555787 is an apocalyptic number.

2555787 is a deficient number, since it is larger than the sum of its proper divisors (1186929).

2555787 is an equidigital number, since it uses as much as digits as its factorization.

2555787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 87 counting only the distinct ones).

The product of its digits is 98000, while the sum is 39.

The square root of 2555787 is about 1598.6828953861. The cubic root of 2555787 is about 136.7229915234.

The spelling of 2555787 in words is "two million, five hundred fifty-five thousand, seven hundred eighty-seven".