54421109 has 2 divisors, whose sum is σ = 54421110. Its totient is φ = 54421108.

The previous prime is 54421099. The next prime is 54421153. The reversal of 54421109 is 90112445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30195025 + 24226084 = 5495^2 + 4922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54421109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54421009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27210554 + 27210555.

It is an arithmetic number, because the mean of its divisors is an integer number (27210555).

Almost surely, 2^54421109 is an apocalyptic number.

It is an amenable number.

54421109 is a deficient number, since it is larger than the sum of its proper divisors (1).

54421109 is an equidigital number, since it uses as much as digits as its factorization.

54421109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 54421109 is about 7377.0664223660. The cubic root of 54421109 is about 378.9562980592.

The spelling of 54421109 in words is "fifty-four million, four hundred twenty-one thousand, one hundred nine".