4051521041 has 4 divisors (see below), whose sum is σ = 4072513572. Its totient is φ = 4030528512.

The previous prime is 4051521013. The next prime is 4051521043. The reversal of 4051521041 is 1401251504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 342102016 + 3709419025 = 18496^2 + 60905^2 .

It is a cyclic number.

It is not a de Polignac number, because 4051521041 - 2¹⁴ = 4051504657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4051520998 and 4051521016.

It is not an unprimeable number, because it can be changed into a prime (4051521043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10495976 + ... + 10496361.

It is an arithmetic number, because the mean of its divisors is an integer number (1018128393).

Almost surely, 2^4051521041 is an apocalyptic number.

It is an amenable number.

4051521041 is a deficient number, since it is larger than the sum of its proper divisors (20992531).

4051521041 is a wasteful number, since it uses less digits than its factorization.

4051521041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20992530.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 4051521041 is about 63651.5596116859. The cubic root of 4051521041 is about 1594.1873778414.

Adding to 4051521041 its reverse (1401251504), we get a palindrome (5452772545).

The spelling of 4051521041 in words is "four billion, fifty-one million, five hundred twenty-one thousand, forty-one".