55381434 has 8 divisors (see below), whose sum is σ = 110762880. Its totient is φ = 18460476.

The previous prime is 55381423. The next prime is 55381439. The reversal of 55381434 is 43418355.

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

55381434 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 55381395 and 55381404.

It is not an unprimeable number, because it can be changed into a prime (55381439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4615114 + ... + 4615125.

It is an arithmetic number, because the mean of its divisors is an integer number (13845360).

Almost surely, 2^55381434 is an apocalyptic number.

55381434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55381434 is a wasteful number, since it uses less digits than its factorization.

55381434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9230244.

The product of its digits is 28800, while the sum is 33.

The square root of 55381434 is about 7441.8703294266. The cubic root of 55381434 is about 381.1723581389.

Adding to 55381434 its reverse (43418355), we get a palindrome (98799789).

The spelling of 55381434 in words is "fifty-five million, three hundred eighty-one thousand, four hundred thirty-four".