53781284 has 6 divisors (see below), whose sum is σ = 94117254. Its totient is φ = 26890640.

The previous prime is 53781271. The next prime is 53781289. The reversal of 53781284 is 48218735.

It can be written as a sum of positive squares in only one way, i.e., 45941284 + 7840000 = 6778^2 + 2800^2 .

It is not an unprimeable number, because it can be changed into a prime (53781289) 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 as a sum of consecutive naturals, namely, 6722657 + ... + 6722664.

It is an arithmetic number, because the mean of its divisors is an integer number (15686209).

Almost surely, 2^53781284 is an apocalyptic number.

It is an amenable number.

53781284 is a deficient number, since it is larger than the sum of its proper divisors (40335970).

53781284 is a wasteful number, since it uses less digits than its factorization.

53781284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13445325 (or 13445323 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 53781284 is about 7333.5723900429. The cubic root of 53781284 is about 377.4653190952.

The spelling of 53781284 in words is "fifty-three million, seven hundred eighty-one thousand, two hundred eighty-four".