2591361 has 12 divisors (see below), whose sum is σ = 3963492. Its totient is φ = 1625856.

The previous prime is 2591333. The next prime is 2591363. The reversal of 2591361 is 1631952.

It can be written as a sum of positive squares in 2 ways, for example, as 1476225 + 1115136 = 1215^2 + 1056^2 .

It is not a de Polignac number, because 2591361 - 2⁷ = 2591233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2591363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8316 + ... + 8621.

It is an arithmetic number, because the mean of its divisors is an integer number (330291).

2^2591361 is an apocalyptic number.

It is an amenable number.

2591361 is a deficient number, since it is larger than the sum of its proper divisors (1372131).

2591361 is a wasteful number, since it uses less digits than its factorization.

2591361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16960 (or 16957 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 2591361 is about 1609.7704805344. The cubic root of 2591361 is about 137.3544200243.

The spelling of 2591361 in words is "two million, five hundred ninety-one thousand, three hundred sixty-one".