5781405 has 16 divisors (see below), whose sum is σ = 10571904. Its totient is φ = 2642880.

The previous prime is 5781383. The next prime is 5781409. The reversal of 5781405 is 5041875.

It is not a de Polignac number, because 5781405 - 2⁷ = 5781277 is a prime.

5781405 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5781409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27426 + ... + 27635.

It is an arithmetic number, because the mean of its divisors is an integer number (660744).

Almost surely, 2^5781405 is an apocalyptic number.

It is an amenable number.

5781405 is a deficient number, since it is larger than the sum of its proper divisors (4790499).

5781405 is a wasteful number, since it uses less digits than its factorization.

5781405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55076.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 5781405 is about 2404.4552397581. The cubic root of 5781405 is about 179.4779627563.

The spelling of 5781405 in words is "five million, seven hundred eighty-one thousand, four hundred five".