54051249391 has 16 divisors (see below), whose sum is σ = 54776461824. Its totient is φ = 53332038144.

The previous prime is 54051249377. The next prime is 54051249397. The reversal of 54051249391 is 19394215045.

It is a cyclic number.

It is not a de Polignac number, because 54051249391 - 2⁹ = 54051248879 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 (54051249397) 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, 18464970 + ... + 18467896.

It is an arithmetic number, because the mean of its divisors is an integer number (3423528864).

Almost surely, 2^54051249391 is an apocalyptic number.

54051249391 is a deficient number, since it is larger than the sum of its proper divisors (725212433).

54051249391 is a wasteful number, since it uses less digits than its factorization.

54051249391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3870.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 54051249391 in words is "fifty-four billion, fifty-one million, two hundred forty-nine thousand, three hundred ninety-one".