55381268 has 6 divisors (see below), whose sum is σ = 96917226. Its totient is φ = 27690632.

The previous prime is 55381253. The next prime is 55381297. The reversal of 55381268 is 86218355.

It can be written as a sum of positive squares in only one way, i.e., 38962564 + 16418704 = 6242^2 + 4052^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 6922655 + ... + 6922662.

It is an arithmetic number, because the mean of its divisors is an integer number (16152871).

Almost surely, 2^55381268 is an apocalyptic number.

It is an amenable number.

55381268 is a deficient number, since it is larger than the sum of its proper divisors (41535958).

55381268 is a wasteful number, since it uses less digits than its factorization.

55381268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13845321 (or 13845319 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 55381268 is about 7441.8591763080. The cubic root of 55381268 is about 381.1719772972.

The spelling of 55381268 in words is "fifty-five million, three hundred eighty-one thousand, two hundred sixty-eight".