5105501111 has 4 divisors (see below), whose sum is σ = 5111812800. Its totient is φ = 5099189424.

The previous prime is 5105501033. The next prime is 5105501117. The reversal of 5105501111 is 1111055015.

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

It is a cyclic number.

It is not a de Polignac number, because 5105501111 - 2¹⁰ = 5105500087 is a prime.

It is a super-2 number, since 2×5105501111² = 52132283188844468642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5105501117) 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, 3154631 + ... + 3156248.

It is an arithmetic number, because the mean of its divisors is an integer number (1277953200).

Almost surely, 2^5105501111 is an apocalyptic number.

5105501111 is a deficient number, since it is larger than the sum of its proper divisors (6311689).

5105501111 is an equidigital number, since it uses as much as digits as its factorization.

5105501111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6311688.

The product of its (nonzero) digits is 125, while the sum is 20.

The square root of 5105501111 is about 71452.7893857196. The cubic root of 5105501111 is about 1721.9192915249.

Adding to 5105501111 its reverse (1111055015), we get a palindrome (6216556126).

The spelling of 5105501111 in words is "five billion, one hundred five million, five hundred one thousand, one hundred eleven".