2251045 has 4 divisors (see below), whose sum is σ = 2701260. Its totient is φ = 1800832.

The previous prime is 2251031. The next prime is 2251049. The reversal of 2251045 is 5401522.

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 527076 + 1723969 = 726^2 + 1313^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251045 - 2⁷ = 2250917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251049) 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, 225100 + ... + 225109.

It is an arithmetic number, because the mean of its divisors is an integer number (675315).

2^2251045 is an apocalyptic number.

It is an amenable number.

2251045 is a deficient number, since it is larger than the sum of its proper divisors (450215).

2251045 is an equidigital number, since it uses as much as digits as its factorization.

2251045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450214.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 2251045 is about 1500.3482928974. The cubic root of 2251045 is about 131.0573530503.

Adding to 2251045 its reverse (5401522), we get a palindrome (7652567).

The spelling of 2251045 in words is "two million, two hundred fifty-one thousand, forty-five".