51122111177 has 4 divisors (see below), whose sum is σ = 51122902656. Its totient is φ = 51121319700.

The previous prime is 51122111167. The next prime is 51122111203. The reversal of 51122111177 is 77111122115.

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 a cyclic number.

It is not a de Polignac number, because 51122111177 - 2¹² = 51122107081 is a prime.

It is a super-2 number, since 2×51122111177² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51122111137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289313 + ... + 431214.

It is an arithmetic number, because the mean of its divisors is an integer number (12780725664).

Almost surely, 2^51122111177 is an apocalyptic number.

It is an amenable number.

51122111177 is a deficient number, since it is larger than the sum of its proper divisors (791479).

51122111177 is an equidigital number, since it uses as much as digits as its factorization.

51122111177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791478.

The product of its digits is 980, while the sum is 29.

The spelling of 51122111177 in words is "fifty-one billion, one hundred twenty-two million, one hundred eleven thousand, one hundred seventy-seven".