51199115 has 16 divisors (see below), whose sum is σ = 67447296. Its totient is φ = 37000800.

The previous prime is 51199103. The next prime is 51199147.

51199115 is nontrivially palindromic in base 10.

51199115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51199115 - 2⁸ = 51198859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6110 + ... + 11820.

It is an arithmetic number, because the mean of its divisors is an integer number (4215456).

Almost surely, 2^51199115 is an apocalyptic number.

51199115 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51199115 is a deficient number, since it is larger than the sum of its proper divisors (16248181).

51199115 is a wasteful number, since it uses less digits than its factorization.

51199115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5890.

The product of its digits is 2025, while the sum is 32.

The square root of 51199115 is about 7155.3556864771. The cubic root of 51199115 is about 371.3249671943.

It can be divided in two parts, 51199 and 115, that multiplied together give a palindrome (5887885).

The spelling of 51199115 in words is "fifty-one million, one hundred ninety-nine thousand, one hundred fifteen".