54121389 has 16 divisors (see below), whose sum is σ = 82624128. Its totient is φ = 30868992.

The previous prime is 54121357. The next prime is 54121409. The reversal of 54121389 is 98312145.

It is not a de Polignac number, because 54121389 - 2⁵ = 54121357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54121339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10869 + ... + 15045.

It is an arithmetic number, because the mean of its divisors is an integer number (5164008).

Almost surely, 2^54121389 is an apocalyptic number.

It is an amenable number.

54121389 is a deficient number, since it is larger than the sum of its proper divisors (28502739).

54121389 is a wasteful number, since it uses less digits than its factorization.

54121389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4804.

The product of its digits is 8640, while the sum is 33.

The square root of 54121389 is about 7356.7240671375. The cubic root of 54121389 is about 378.2593262622.

The spelling of 54121389 in words is "fifty-four million, one hundred twenty-one thousand, three hundred eighty-nine".