2491365 has 16 divisors (see below), whose sum is σ = 4084416. Its totient is φ = 1296000.

The previous prime is 2491351. The next prime is 2491369. The reversal of 2491365 is 5631942.

It is not a de Polignac number, because 2491365 - 2¹² = 2487269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1411 + ... + 2640.

It is an arithmetic number, because the mean of its divisors is an integer number (255276).

2^2491365 is an apocalyptic number.

It is an amenable number.

2491365 is a deficient number, since it is larger than the sum of its proper divisors (1593051).

2491365 is a wasteful number, since it uses less digits than its factorization.

2491365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100.

The product of its digits is 6480, while the sum is 30.

The square root of 2491365 is about 1578.4058413475. The cubic root of 2491365 is about 135.5644406023.

The spelling of 2491365 in words is "two million, four hundred ninety-one thousand, three hundred sixty-five".