54120391 has 6 divisors (see below), whose sum is σ = 58603920. Its totient is φ = 49957128.

The previous prime is 54120377. The next prime is 54120397. The reversal of 54120391 is 19302145.

It is not a de Polignac number, because 54120391 - 2¹⁷ = 53989319 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54120397) 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 5 ways as a sum of consecutive naturals, for example, 159951 + ... + 160288.

It is an arithmetic number, because the mean of its divisors is an integer number (9767320).

Almost surely, 2^54120391 is an apocalyptic number.

54120391 is a deficient number, since it is larger than the sum of its proper divisors (4483529).

54120391 is a wasteful number, since it uses less digits than its factorization.

54120391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320265 (or 320252 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 54120391 is about 7356.6562377210. The cubic root of 54120391 is about 378.2570012102.

The spelling of 54120391 in words is "fifty-four million, one hundred twenty thousand, three hundred ninety-one".