51188115 has 16 divisors (see below), whose sum is σ = 89346816. Its totient is φ = 24818400.

The previous prime is 51188107. The next prime is 51188117.

51188115 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51188115 - 2³ = 51188107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51188117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154951 + ... + 155280.

It is an arithmetic number, because the mean of its divisors is an integer number (5584176).

Almost surely, 2^51188115 is an apocalyptic number.

51188115 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51188115 is a deficient number, since it is larger than the sum of its proper divisors (38158701).

51188115 is a wasteful number, since it uses less digits than its factorization.

51188115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310250.

The product of its digits is 1600, while the sum is 30.

The square root of 51188115 is about 7154.5869901763. The cubic root of 51188115 is about 371.2983725472.

The spelling of 51188115 in words is "fifty-one million, one hundred eighty-eight thousand, one hundred fifteen".