2243451 has 16 divisors (see below), whose sum is σ = 3492864. Its totient is φ = 1254144.

The previous prime is 2243431. The next prime is 2243453. The reversal of 2243451 is 1543422.

It is not a de Polignac number, because 2243451 - 2⁵ = 2243419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243453) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 150 + ... + 2123.

It is an arithmetic number, because the mean of its divisors is an integer number (218304).

2^2243451 is an apocalyptic number.

2243451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2243451 is a deficient number, since it is larger than the sum of its proper divisors (1249413).

2243451 is a wasteful number, since it uses less digits than its factorization.

2243451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330.

The product of its digits is 960, while the sum is 21.

The square root of 2243451 is about 1497.8154091877. The cubic root of 2243451 is about 130.9098110844.

Adding to 2243451 its reverse (1543422), we get a palindrome (3786873).

The spelling of 2243451 in words is "two million, two hundred forty-three thousand, four hundred fifty-one".