55381738 has 8 divisors (see below), whose sum is σ = 83196288. Its totient is φ = 27649644.

The previous prime is 55381687. The next prime is 55381741. The reversal of 55381738 is 83718355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55381738.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18906 + ... + 21637.

It is an arithmetic number, because the mean of its divisors is an integer number (10399536).

Almost surely, 2^55381738 is an apocalyptic number.

55381738 is a deficient number, since it is larger than the sum of its proper divisors (27814550).

55381738 is a wasteful number, since it uses less digits than its factorization.

55381738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41228.

The product of its digits is 100800, while the sum is 40.

The square root of 55381738 is about 7441.8907543715. The cubic root of 55381738 is about 381.1730555819.

The spelling of 55381738 in words is "fifty-five million, three hundred eighty-one thousand, seven hundred thirty-eight".