2243134521 has 6 divisors (see below), whose sum is σ = 3240083210. Its totient is φ = 1495423008.

The previous prime is 2243134499. The next prime is 2243134589. The reversal of 2243134521 is 1254313422.

2243134521 is a `hidden beast` number, since 2 + 2 + 4 + 3 + 134 + 521 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2083466025 + 159668496 = 45645^2 + 12636^2 .

It is not a de Polignac number, because 2243134521 - 2¹⁷ = 2243003449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2243134591) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124618576 + ... + 124618593.

Almost surely, 2^2243134521 is an apocalyptic number.

It is an amenable number.

2243134521 is a deficient number, since it is larger than the sum of its proper divisors (996948689).

2243134521 is a wasteful number, since it uses less digits than its factorization.

2243134521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249237175 (or 249237172 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 2243134521 is about 47361.7411103097. The cubic root of 2243134521 is about 1309.0365506929.

Adding to 2243134521 its reverse (1254313422), we get a palindrome (3497447943).

The spelling of 2243134521 in words is "two billion, two hundred forty-three million, one hundred thirty-four thousand, five hundred twenty-one".