51188284 has 12 divisors (see below), whose sum is σ = 102376624. Its totient is φ = 21937824.

The previous prime is 51188281. The next prime is 51188321. The reversal of 51188284 is 48288115.

It is a happy number.

51188284 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51188281) 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 3 ways as a sum of consecutive naturals, for example, 914049 + ... + 914104.

Almost surely, 2^51188284 is an apocalyptic number.

It is an amenable number.

51188284 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51188284 is a wasteful number, since it uses less digits than its factorization.

51188284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828164 (or 1828162 counting only the distinct ones).

The product of its digits is 20480, while the sum is 37.

The square root of 51188284 is about 7154.5988007714. The cubic root of 51188284 is about 371.2987811665.

The spelling of 51188284 in words is "fifty-one million, one hundred eighty-eight thousand, two hundred eighty-four".