2253805 has 4 divisors (see below), whose sum is σ = 2704572. Its totient is φ = 1803040.

The previous prime is 2253803. The next prime is 2253821. The reversal of 2253805 is 5083522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 956484 + 1297321 = 978^2 + 1139^2 .

It is not a de Polignac number, because 2253805 - 2¹ = 2253803 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 2⁷ + 5⁷ + 3⁵ + 8⁷ + 0 + 5⁷ .

It is a Duffinian number.

2253805 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2253805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2253803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225376 + ... + 225385.

It is an arithmetic number, because the mean of its divisors is an integer number (676143).

2^2253805 is an apocalyptic number.

It is an amenable number.

2253805 is a deficient number, since it is larger than the sum of its proper divisors (450767).

2253805 is an equidigital number, since it uses as much as digits as its factorization.

2253805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450766.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2253805 is about 1501.2677975631. The cubic root of 2253805 is about 131.1108941925.

The spelling of 2253805 in words is "two million, two hundred fifty-three thousand, eight hundred five".