54139213 has 2 divisors, whose sum is σ = 54139214. Its totient is φ = 54139212.

The previous prime is 54139207. The next prime is 54139223. The reversal of 54139213 is 31293145.

54139213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51883209 + 2256004 = 7203^2 + 1502^2 .

It is a cyclic number.

It is not a de Polignac number, because 54139213 - 2²¹ = 52042061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54139223) 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 as a sum of consecutive naturals, namely, 27069606 + 27069607.

It is an arithmetic number, because the mean of its divisors is an integer number (27069607).

Almost surely, 2^54139213 is an apocalyptic number.

It is an amenable number.

54139213 is a deficient number, since it is larger than the sum of its proper divisors (1).

54139213 is an equidigital number, since it uses as much as digits as its factorization.

54139213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 54139213 is about 7357.9353761772. The cubic root of 54139213 is about 378.3008462253.

The spelling of 54139213 in words is "fifty-four million, one hundred thirty-nine thousand, two hundred thirteen".