2251365 has 8 divisors (see below), whose sum is σ = 3602208. Its totient is φ = 1200720.

The previous prime is 2251349. The next prime is 2251369. The reversal of 2251365 is 5631522.

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

It is not a de Polignac number, because 2251365 - 2⁴ = 2251349 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75031 + ... + 75060.

It is an arithmetic number, because the mean of its divisors is an integer number (450276).

2^2251365 is an apocalyptic number.

It is an amenable number.

2251365 is a deficient number, since it is larger than the sum of its proper divisors (1350843).

2251365 is a wasteful number, since it uses less digits than its factorization.

2251365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150099.

The product of its digits is 1800, while the sum is 24.

The square root of 2251365 is about 1500.4549310126. The cubic root of 2251365 is about 131.0635629611.

Adding to 2251365 its reverse (5631522), we get a palindrome (7882887).

It can be divided in two parts, 22513 and 65, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 2251365 in words is "two million, two hundred fifty-one thousand, three hundred sixty-five".