2241611521 has 8 divisors (see below), whose sum is σ = 2362663080. Its totient is φ = 2123476992.

The previous prime is 2241611513. The next prime is 2241611531. The reversal of 2241611521 is 1251161422.

It can be written as a sum of positive squares in 4 ways, for example, as 999824400 + 1241787121 = 31620^2 + 35239^2 .

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 2241611521 - 2³ = 2241611513 is a prime.

It is a super-2 number, since 2×2241611521² = 10049644422159866882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2241611501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727680 + ... + 730753.

It is an arithmetic number, because the mean of its divisors is an integer number (295332885).

Almost surely, 2^2241611521 is an apocalyptic number.

It is an amenable number.

2241611521 is a deficient number, since it is larger than the sum of its proper divisors (121051559).

2241611521 is a wasteful number, since it uses less digits than its factorization.

2241611521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458515.

The product of its digits is 960, while the sum is 25.

The square root of 2241611521 is about 47345.6600017362. The cubic root of 2241611521 is about 1308.7402221960.

Adding to 2241611521 its reverse (1251161422), we get a palindrome (3492772943).

The spelling of 2241611521 in words is "two billion, two hundred forty-one million, six hundred eleven thousand, five hundred twenty-one".