54155389 has 4 divisors (see below), whose sum is σ = 54240256. Its totient is φ = 54070524.

The previous prime is 54155371. The next prime is 54155393. The reversal of 54155389 is 98355145.

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 a de Polignac number, because none of the positive numbers 2^k-54155389 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 (54155399) 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, 41469 + ... + 42754.

It is an arithmetic number, because the mean of its divisors is an integer number (13560064).

Almost surely, 2^54155389 is an apocalyptic number.

It is an amenable number.

54155389 is a deficient number, since it is larger than the sum of its proper divisors (84867).

54155389 is an equidigital number, since it uses as much as digits as its factorization.

54155389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84866.

The product of its digits is 108000, while the sum is 40.

The square root of 54155389 is about 7359.0345154782. The cubic root of 54155389 is about 378.3385193818.

The spelling of 54155389 in words is "fifty-four million, one hundred fifty-five thousand, three hundred eighty-nine".