51727140 has 48 divisors (see below), whose sum is σ = 160930560. Its totient is φ = 13793760.

The previous prime is 51727111. The next prime is 51727157. The reversal of 51727140 is 4172715.

51727140 is a `hidden beast` number, since 517 + 2 + 7 + 140 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 47356 + ... + 48435.

It is an arithmetic number, because the mean of its divisors is an integer number (3352720).

Almost surely, 2^51727140 is an apocalyptic number.

It is an amenable number.

51727140 is an abundant number, since it is smaller than the sum of its proper divisors (109203420).

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

51727140 is a wasteful number, since it uses less digits than its factorization.

51727140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95809 (or 95801 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 51727140 is about 7192.1582296276. The cubic root of 51727140 is about 372.5971159482.

Adding to 51727140 its reverse (4172715), we get a palindrome (55899855).

The spelling of 51727140 in words is "fifty-one million, seven hundred twenty-seven thousand, one hundred forty".