51284146 has 16 divisors (see below), whose sum is σ = 79717464. Its totient is φ = 24724224.

The previous prime is 51284141. The next prime is 51284159. The reversal of 51284146 is 64148215.

It can be written as a sum of positive squares in 4 ways, for example, as 49491225 + 1792921 = 7035^2 + 1339^2 .

It is not an unprimeable number, because it can be changed into a prime (51284141) 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 7 ways as a sum of consecutive naturals, for example, 5296 + ... + 11428.

Almost surely, 2^51284146 is an apocalyptic number.

51284146 is a deficient number, since it is larger than the sum of its proper divisors (28433318).

51284146 is a wasteful number, since it uses less digits than its factorization.

51284146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6285.

The product of its digits is 7680, while the sum is 31.

The square root of 51284146 is about 7161.2949946221. The cubic root of 51284146 is about 371.5304178163.

The spelling of 51284146 in words is "fifty-one million, two hundred eighty-four thousand, one hundred forty-six".