51110551101 has 4 divisors (see below), whose sum is σ = 68147401472. Its totient is φ = 34073700732.

The previous prime is 51110551097. The next prime is 51110551103. The reversal of 51110551101 is 10115501115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51110551101 - 2² = 51110551097 is a prime.

It is a super-2 number, since 2×51110551101² (a number of 22 digits) 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 (51110551103) 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, 8518425181 + ... + 8518425186.

It is an arithmetic number, because the mean of its divisors is an integer number (17036850368).

Almost surely, 2^51110551101 is an apocalyptic number.

It is an amenable number.

51110551101 is a deficient number, since it is larger than the sum of its proper divisors (17036850371).

51110551101 is a wasteful number, since it uses less digits than its factorization.

51110551101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17036850370.

The product of its (nonzero) digits is 125, while the sum is 21.

The spelling of 51110551101 in words is "fifty-one billion, one hundred ten million, five hundred fifty-one thousand, one hundred one".