5111605551 has 16 divisors (see below), whose sum is σ = 7345507680. Its totient is φ = 3143132160.

The previous prime is 5111605507. The next prime is 5111605561. The reversal of 5111605551 is 1555061115.

It is not a de Polignac number, because 5111605551 - 2¹⁰ = 5111604527 is a prime.

It is a super-2 number, since 2×5111605551² = 52257022618028027202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5111605501) 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 15 ways as a sum of consecutive naturals, for example, 570 + ... + 101111.

It is an arithmetic number, because the mean of its divisors is an integer number (459094230).

Almost surely, 2^5111605551 is an apocalyptic number.

5111605551 is a deficient number, since it is larger than the sum of its proper divisors (2233902129).

5111605551 is a wasteful number, since it uses less digits than its factorization.

5111605551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102986.

The product of its (nonzero) digits is 3750, while the sum is 30.

The square root of 5111605551 is about 71495.4932216010. The cubic root of 5111605551 is about 1722.6052944734.

Adding to 5111605551 its reverse (1555061115), we get a palindrome (6666666666).

The spelling of 5111605551 in words is "five billion, one hundred eleven million, six hundred five thousand, five hundred fifty-one".