54039190921 has 4 divisors (see below), whose sum is σ = 54102101200. Its totient is φ = 53976280644.

The previous prime is 54039190903. The next prime is 54039190937. The reversal of 54039190921 is 12909193045.

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 not a de Polignac number, because 54039190921 - 2²⁹ = 53502320009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54039190951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31453851 + ... + 31455568.

It is an arithmetic number, because the mean of its divisors is an integer number (13525525300).

Almost surely, 2^54039190921 is an apocalyptic number.

It is an amenable number.

54039190921 is a deficient number, since it is larger than the sum of its proper divisors (62910279).

54039190921 is an equidigital number, since it uses as much as digits as its factorization.

54039190921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62910278.

The product of its (nonzero) digits is 87480, while the sum is 43.

The spelling of 54039190921 in words is "fifty-four billion, thirty-nine million, one hundred ninety thousand, nine hundred twenty-one".