2243253521 has 2 divisors, whose sum is σ = 2243253522. Its totient is φ = 2243253520.

The previous prime is 2243253517. The next prime is 2243253539. The reversal of 2243253521 is 1253523422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1829700625 + 413552896 = 42775^2 + 20336^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243253521 - 2² = 2243253517 is a prime.

It is not a weakly prime, because it can be changed into another prime (2243253511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121626760 + 1121626761.

It is an arithmetic number, because the mean of its divisors is an integer number (1121626761).

Almost surely, 2^2243253521 is an apocalyptic number.

It is an amenable number.

2243253521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243253521 is an equidigital number, since it uses as much as digits as its factorization.

2243253521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 29.

The square root of 2243253521 is about 47362.9973819225. The cubic root of 2243253521 is about 1309.0596987466.

Adding to 2243253521 its reverse (1253523422), we get a palindrome (3496776943).

The spelling of 2243253521 in words is "two billion, two hundred forty-three million, two hundred fifty-three thousand, five hundred twenty-one".