54939109 has 2 divisors, whose sum is σ = 54939110. Its totient is φ = 54939108.

The previous prime is 54939107. The next prime is 54939119. The reversal of 54939109 is 90193945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39312900 + 15626209 = 6270^2 + 3953^2 .

It is a cyclic number.

It is not a de Polignac number, because 54939109 - 2¹ = 54939107 is a prime.

Together with 54939107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54939107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27469554 + 27469555.

It is an arithmetic number, because the mean of its divisors is an integer number (27469555).

Almost surely, 2^54939109 is an apocalyptic number.

It is an amenable number.

54939109 is a deficient number, since it is larger than the sum of its proper divisors (1).

54939109 is an equidigital number, since it uses as much as digits as its factorization.

54939109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 54939109 is about 7412.0920798382. The cubic root of 54939109 is about 380.1548514780.

The spelling of 54939109 in words is "fifty-four million, nine hundred thirty-nine thousand, one hundred nine".