5781555 has 24 divisors (see below), whose sum is σ = 10793328. Its totient is φ = 2846016.

The previous prime is 5781553. The next prime is 5781569. The reversal of 5781555 is 5551875.

5781555 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5781555 - 2¹ = 5781553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5781553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4357 + ... + 5526.

It is an arithmetic number, because the mean of its divisors is an integer number (449722).

Almost surely, 2^5781555 is an apocalyptic number.

5781555 is a deficient number, since it is larger than the sum of its proper divisors (5011773).

5781555 is a wasteful number, since it uses less digits than its factorization.

5781555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9907 (or 9904 counting only the distinct ones).

The product of its digits is 35000, while the sum is 36.

The square root of 5781555 is about 2404.4864316523. The cubic root of 5781555 is about 179.4795149431.

It can be divided in two parts, 5781 and 555, that added together give a palindrome (6336).

The spelling of 5781555 in words is "five million, seven hundred eighty-one thousand, five hundred fifty-five".