2251285 has 4 divisors (see below), whose sum is σ = 2701548. Its totient is φ = 1801024.

The previous prime is 2251279. The next prime is 2251297. The reversal of 2251285 is 5821522.

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 1790244 + 461041 = 1338^2 + 679^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251285 - 2¹⁷ = 2120213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225124 + ... + 225133.

It is an arithmetic number, because the mean of its divisors is an integer number (675387).

2^2251285 is an apocalyptic number.

It is an amenable number.

2251285 is a deficient number, since it is larger than the sum of its proper divisors (450263).

2251285 is an equidigital number, since it uses as much as digits as its factorization.

2251285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450262.

The product of its digits is 1600, while the sum is 25.

The square root of 2251285 is about 1500.4282721943. The cubic root of 2251285 is about 131.0620105385.

The spelling of 2251285 in words is "two million, two hundred fifty-one thousand, two hundred eighty-five".