51151105 has 4 divisors (see below), whose sum is σ = 61381332. Its totient is φ = 40920880.

The previous prime is 51151091. The next prime is 51151109. The reversal of 51151105 is 50115115.

It is a happy number.

It is a Cunningham number, because it is equal to 7152²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50115115 = 5 ⋅10023023.

It can be written as a sum of positive squares in 2 ways, for example, as 18421264 + 32729841 = 4292^2 + 5721^2 .

It is not a de Polignac number, because 51151105 - 2⁵ = 51151073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51151109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5115106 + ... + 5115115.

It is an arithmetic number, because the mean of its divisors is an integer number (15345333).

Almost surely, 2^51151105 is an apocalyptic number.

It is an amenable number.

51151105 is a deficient number, since it is larger than the sum of its proper divisors (10230227).

51151105 is a wasteful number, since it uses less digits than its factorization.

51151105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10230226.

The product of its (nonzero) digits is 125, while the sum is 19.

The square root of 51151105 is about 7152.0000699105. Note that the first 4 decimals coincide. The cubic root of 51151105 is about 371.2088656636.

It can be divided in two parts, 5115110 and 5, that added together give a palindrome (5115115).

The spelling of 51151105 in words is "fifty-one million, one hundred fifty-one thousand, one hundred five".