54443381 has 4 divisors (see below), whose sum is σ = 54835200. Its totient is φ = 54051564.

The previous prime is 54443377. The next prime is 54443383. The reversal of 54443381 is 18334445.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54443381 - 2² = 54443377 is a prime.

It is a super-2 number, since 2×54443381² = 5928163469422322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54443383) 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, 195701 + ... + 195978.

It is an arithmetic number, because the mean of its divisors is an integer number (13708800).

Almost surely, 2^54443381 is an apocalyptic number.

It is an amenable number.

54443381 is a deficient number, since it is larger than the sum of its proper divisors (391819).

54443381 is a wasteful number, since it uses less digits than its factorization.

54443381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391818.

The product of its digits is 23040, while the sum is 32.

The square root of 54443381 is about 7378.5758110898. The cubic root of 54443381 is about 379.0079873376.

The spelling of 54443381 in words is "fifty-four million, four hundred forty-three thousand, three hundred eighty-one".