2235243521 has 16 divisors (see below), whose sum is σ = 2714431104. Its totient is φ = 1796822784.

The previous prime is 2235243509. The next prime is 2235243529. The reversal of 2235243521 is 1253425322.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2235243521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2235243529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 491 + ... + 66863.

It is an arithmetic number, because the mean of its divisors is an integer number (169651944).

Almost surely, 2^2235243521 is an apocalyptic number.

It is an amenable number.

2235243521 is a deficient number, since it is larger than the sum of its proper divisors (479187583).

2235243521 is a wasteful number, since it uses less digits than its factorization.

2235243521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66680.

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

The square root of 2235243521 is about 47278.3620803428. The cubic root of 2235243521 is about 1307.4997512268.

Adding to 2235243521 its reverse (1253425322), we get a palindrome (3488668843).

The spelling of 2235243521 in words is "two billion, two hundred thirty-five million, two hundred forty-three thousand, five hundred twenty-one".