4011522521 has 16 divisors (see below), whose sum is σ = 4341931776. Its totient is φ = 3691758336.

The previous prime is 4011522511. The next prime is 4011522547. The reversal of 4011522521 is 1252251104.

It is a cyclic number.

It is not a de Polignac number, because 4011522521 - 2¹⁴ = 4011506137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4011522511) 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, 1306430 + ... + 1309496.

It is an arithmetic number, because the mean of its divisors is an integer number (271370736).

Almost surely, 2^4011522521 is an apocalyptic number.

It is an amenable number.

4011522521 is a deficient number, since it is larger than the sum of its proper divisors (330409255).

4011522521 is a wasteful number, since it uses less digits than its factorization.

4011522521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768.

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

The square root of 4011522521 is about 63336.5812228605. The cubic root of 4011522521 is about 1588.9238292132.

Adding to 4011522521 its reverse (1252251104), we get a palindrome (5263773625).

The spelling of 4011522521 in words is "four billion, eleven million, five hundred twenty-two thousand, five hundred twenty-one".