51391182 has 16 divisors (see below), whose sum is σ = 103843152. Its totient is φ = 16953600.

The previous prime is 51391139. The next prime is 51391199. The reversal of 51391182 is 28119315.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 43569 + ... + 44732.

It is an arithmetic number, because the mean of its divisors is an integer number (6490197).

Almost surely, 2^51391182 is an apocalyptic number.

51391182 is an abundant number, since it is smaller than the sum of its proper divisors (52451970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51391182 is a wasteful number, since it uses less digits than its factorization.

51391182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88403.

The product of its digits is 2160, while the sum is 30.

The square root of 51391182 is about 7168.7643286692. The cubic root of 51391182 is about 371.7887139872.

The spelling of 51391182 in words is "fifty-one million, three hundred ninety-one thousand, one hundred eighty-two".