2243340553 has 4 divisors (see below), whose sum is σ = 2375301780. Its totient is φ = 2111379328.

The previous prime is 2243340551. The next prime is 2243340557. The reversal of 2243340553 is 3550433422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3550433422 = 2 ⋅1775216711.

It can be written as a sum of positive squares in 2 ways, for example, as 1540719504 + 702621049 = 39252^2 + 26507^2 .

It is not a de Polignac number, because 2243340553 - 2¹ = 2243340551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2243340551) 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, 65980588 + ... + 65980621.

It is an arithmetic number, because the mean of its divisors is an integer number (593825445).

Almost surely, 2^2243340553 is an apocalyptic number.

It is an amenable number.

2243340553 is a deficient number, since it is larger than the sum of its proper divisors (131961227).

2243340553 is a wasteful number, since it uses less digits than its factorization.

2243340553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131961226.

The product of its (nonzero) digits is 43200, while the sum is 31.

The square root of 2243340553 is about 47363.9161493219. The cubic root of 2243340553 is about 1309.0766278200.

Adding to 2243340553 its reverse (3550433422), we get a palindrome (5793773975).

The spelling of 2243340553 in words is "two billion, two hundred forty-three million, three hundred forty thousand, five hundred fifty-three".