55381774 has 16 divisors (see below), whose sum is σ = 95157216. Its totient is φ = 23680800.

The previous prime is 55381771. The next prime is 55381819. The reversal of 55381774 is 47718355.

55381774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55381771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2164 + ... + 10744.

It is an arithmetic number, because the mean of its divisors is an integer number (5947326).

Almost surely, 2^55381774 is an apocalyptic number.

55381774 is a deficient number, since it is larger than the sum of its proper divisors (39775442).

55381774 is a wasteful number, since it uses less digits than its factorization.

55381774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9051.

The product of its digits is 117600, while the sum is 40.

The square root of 55381774 is about 7441.8931731113. The cubic root of 55381774 is about 381.1731381737.

The spelling of 55381774 in words is "fifty-five million, three hundred eighty-one thousand, seven hundred seventy-four".