2591385 has 8 divisors (see below), whose sum is σ = 4146240. Its totient is φ = 1382064.

The previous prime is 2591363. The next prime is 2591389. The reversal of 2591385 is 5831952.

2591385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2591385 - 2⁹ = 2590873 is a prime.

2591385 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2591389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86365 + ... + 86394.

It is an arithmetic number, because the mean of its divisors is an integer number (518280).

2^2591385 is an apocalyptic number.

It is an amenable number.

2591385 is a deficient number, since it is larger than the sum of its proper divisors (1554855).

2591385 is a wasteful number, since it uses less digits than its factorization.

2591385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172767.

The product of its digits is 10800, while the sum is 33.

The square root of 2591385 is about 1609.7779349960. Note that the first 3 decimals coincide. The cubic root of 2591385 is about 137.3548440609.

The spelling of 2591385 in words is "two million, five hundred ninety-one thousand, three hundred eighty-five".