4011522541 has 4 divisors (see below), whose sum is σ = 4320101212. Its totient is φ = 3702943872.

The previous prime is 4011522511. The next prime is 4011522547. The reversal of 4011522541 is 1452251104.

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 768675625 + 3242846916 = 27725^2 + 56946^2 .

It is a cyclic number.

It is not a de Polignac number, because 4011522541 - 2¹⁵ = 4011489773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4011522547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154289316 + ... + 154289341.

It is an arithmetic number, because the mean of its divisors is an integer number (1080025303).

Almost surely, 2^4011522541 is an apocalyptic number.

It is an amenable number.

4011522541 is a deficient number, since it is larger than the sum of its proper divisors (308578671).

4011522541 is a wasteful number, since it uses less digits than its factorization.

4011522541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308578670.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 4011522541 is about 63336.5813807471. The cubic root of 4011522541 is about 1588.9238318538.

Adding to 4011522541 its reverse (1452251104), we get a palindrome (5463773645).

The spelling of 4011522541 in words is "four billion, eleven million, five hundred twenty-two thousand, five hundred forty-one".