2243551 has 2 divisors, whose sum is σ = 2243552. Its totient is φ = 2243550.

The previous prime is 2243537. The next prime is 2243587. The reversal of 2243551 is 1553422.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2243551 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2243531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121775 + 1121776.

It is an arithmetic number, because the mean of its divisors is an integer number (1121776).

2^2243551 is an apocalyptic number.

2243551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243551 is an equidigital number, since it uses as much as digits as its factorization.

2243551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 22.

The square root of 2243551 is about 1497.8487907663. The cubic root of 2243551 is about 130.9117561215.

Adding to 2243551 its reverse (1553422), we get a palindrome (3796973).

The spelling of 2243551 in words is "two million, two hundred forty-three thousand, five hundred fifty-one".