54100091 has 4 divisors (see below), whose sum is σ = 54184872. Its totient is φ = 54015312.

The previous prime is 54100073. The next prime is 54100093. The reversal of 54100091 is 19000145.

54100091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54100091 - 2²² = 49905787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54100093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41426 + ... + 42711.

It is an arithmetic number, because the mean of its divisors is an integer number (13546218).

Almost surely, 2^54100091 is an apocalyptic number.

54100091 is a deficient number, since it is larger than the sum of its proper divisors (84781).

54100091 is an equidigital number, since it uses as much as digits as its factorization.

54100091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84780.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 54100091 is about 7355.2764054113. The cubic root of 54100091 is about 378.2097018637.

The spelling of 54100091 in words is "fifty-four million, one hundred thousand, ninety-one".