51391162 has 16 divisors (see below), whose sum is σ = 81339840. Its totient is φ = 24284448.

The previous prime is 51391139. The next prime is 51391199. The reversal of 51391162 is 26119315.

It is a self number, because there is not a number n which added to its sum of digits gives 51391162.

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, 17118 + ... + 19894.

It is an arithmetic number, because the mean of its divisors is an integer number (5083740).

Almost surely, 2^51391162 is an apocalyptic number.

51391162 is a deficient number, since it is larger than the sum of its proper divisors (29948678).

51391162 is a wasteful number, since it uses less digits than its factorization.

51391162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285.

The product of its digits is 1620, while the sum is 28.

The square root of 51391162 is about 7168.7629337285. The cubic root of 51391162 is about 371.7886657573.

The spelling of 51391162 in words is "fifty-one million, three hundred ninety-one thousand, one hundred sixty-two".