2558887 has 4 divisors (see below), whose sum is σ = 2618440. Its totient is φ = 2499336.

The previous prime is 2558879. The next prime is 2558909. The reversal of 2558887 is 7888552.

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 2558887 - 2³ = 2558879 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 59509 = 2558887 / (2 + 5 + 5 + 8 + 8 + 8 + 7).

It is a Duffinian number.

2558887 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2558837) 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, 29712 + ... + 29797.

It is an arithmetic number, because the mean of its divisors is an integer number (654610).

2^2558887 is an apocalyptic number.

2558887 is a deficient number, since it is larger than the sum of its proper divisors (59553).

2558887 is an equidigital number, since it uses as much as digits as its factorization.

2558887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59552.

The product of its digits is 179200, while the sum is 43.

The square root of 2558887 is about 1599.6521496876. The cubic root of 2558887 is about 136.7782478267.

The spelling of 2558887 in words is "two million, five hundred fifty-eight thousand, eight hundred eighty-seven".