2251765 has 8 divisors (see below), whose sum is σ = 2740608. Its totient is φ = 1775760.

The previous prime is 2251741. The next prime is 2251771. The reversal of 2251765 is 5671522.

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

It is not a de Polignac number, because 2251765 - 2⁷ = 2251637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2817 + ... + 3526.

It is an arithmetic number, because the mean of its divisors is an integer number (342576).

2^2251765 is an apocalyptic number.

It is an amenable number.

2251765 is a deficient number, since it is larger than the sum of its proper divisors (488843).

2251765 is an equidigital number, since it uses as much as digits as its factorization.

2251765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6419.

The product of its digits is 4200, while the sum is 28.

The square root of 2251765 is about 1500.5882179999. The cubic root of 2251765 is about 131.0713245221.

The spelling of 2251765 in words is "two million, two hundred fifty-one thousand, seven hundred sixty-five".