2251426 has 4 divisors (see below), whose sum is σ = 3377142. Its totient is φ = 1125712.

The previous prime is 2251423. The next prime is 2251427. The reversal of 2251426 is 6241522.

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

It can be written as a sum of positive squares in only one way, i.e., 1320201 + 931225 = 1149^2 + 965^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2251397 and 2251406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562855 + ... + 562858.

2^2251426 is an apocalyptic number.

2251426 is a deficient number, since it is larger than the sum of its proper divisors (1125716).

2251426 is a wasteful number, since it uses less digits than its factorization.

2251426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125715.

The product of its digits is 960, while the sum is 22.

The square root of 2251426 is about 1500.4752580433. The cubic root of 2251426 is about 131.0647466585.

Adding to 2251426 its reverse (6241522), we get a palindrome (8492948).

The spelling of 2251426 in words is "two million, two hundred fifty-one thousand, four hundred twenty-six".