2235242521 has 8 divisors (see below), whose sum is σ = 2250206280. Its totient is φ = 2220302592.

The previous prime is 2235242509. The next prime is 2235242531. The reversal of 2235242521 is 1252425322.

It can be written as a sum of positive squares in 4 ways, for example, as 676572121 + 1558670400 = 26011^2 + 39480^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2235242521 - 2⁷ = 2235242393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2235242521.

It is not an unprimeable number, because it can be changed into a prime (2235242531) 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 7 ways as a sum of consecutive naturals, for example, 207361 + ... + 217873.

It is an arithmetic number, because the mean of its divisors is an integer number (281275785).

Almost surely, 2^2235242521 is an apocalyptic number.

It is an amenable number.

2235242521 is a deficient number, since it is larger than the sum of its proper divisors (14963759).

2235242521 is a wasteful number, since it uses less digits than its factorization.

2235242521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11915.

The product of its digits is 9600, while the sum is 28.

The square root of 2235242521 is about 47278.3515046792. The cubic root of 2235242521 is about 1307.4995562443.

Adding to 2235242521 its reverse (1252425322), we get a palindrome (3487667843).

The spelling of 2235242521 in words is "two billion, two hundred thirty-five million, two hundred forty-two thousand, five hundred twenty-one".