54389191 has 4 divisors (see below), whose sum is σ = 57251800. Its totient is φ = 51526584.

The previous prime is 54389173. The next prime is 54389201. The reversal of 54389191 is 19198345.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54389191 - 2¹⁹ = 53864903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54389131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1431276 + ... + 1431313.

It is an arithmetic number, because the mean of its divisors is an integer number (14312950).

Almost surely, 2^54389191 is an apocalyptic number.

54389191 is a deficient number, since it is larger than the sum of its proper divisors (2862609).

54389191 is a wasteful number, since it uses less digits than its factorization.

54389191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862608.

The product of its digits is 38880, while the sum is 40.

The square root of 54389191 is about 7374.9027790202. The cubic root of 54389191 is about 378.8821975690.

The spelling of 54389191 in words is "fifty-four million, three hundred eighty-nine thousand, one hundred ninety-one".