4145521111 has 8 divisors (see below), whose sum is σ = 4496433984. Its totient is φ = 3806503680.

The previous prime is 4145521073. The next prime is 4145521117. The reversal of 4145521111 is 1111255414.

It is a happy number.

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 4145521111 - 2¹³ = 4145512919 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 (4145521117) 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, 2973135 + ... + 2974528.

It is an arithmetic number, because the mean of its divisors is an integer number (562054248).

Almost surely, 2^4145521111 is an apocalyptic number.

4145521111 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

4145521111 is a deficient number, since it is larger than the sum of its proper divisors (350912873).

4145521111 is a wasteful number, since it uses less digits than its factorization.

4145521111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5947721.

The product of its digits is 800, while the sum is 25.

The square root of 4145521111 is about 64385.7213285679. The cubic root of 4145521111 is about 1606.4222485399.

Adding to 4145521111 its reverse (1111255414), we get a palindrome (5256776525).

The spelling of 4145521111 in words is "four billion, one hundred forty-five million, five hundred twenty-one thousand, one hundred eleven".