54138817 has 2 divisors, whose sum is σ = 54138818. Its totient is φ = 54138816.

The previous prime is 54138787. The next prime is 54138823. The reversal of 54138817 is 71883145.

54138817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28291761 + 25847056 = 5319^2 + 5084^2 .

It is a cyclic number.

It is not a de Polignac number, because 54138817 - 2¹⁵ = 54106049 is a prime.

It is not a weakly prime, because it can be changed into another prime (54138857) 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, 27069408 + 27069409.

It is an arithmetic number, because the mean of its divisors is an integer number (27069409).

Almost surely, 2^54138817 is an apocalyptic number.

It is an amenable number.

54138817 is a deficient number, since it is larger than the sum of its proper divisors (1).

54138817 is an equidigital number, since it uses as much as digits as its factorization.

54138817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 37.

The square root of 54138817 is about 7357.9084664054. The cubic root of 54138817 is about 378.2999238656.

The spelling of 54138817 in words is "fifty-four million, one hundred thirty-eight thousand, eight hundred seventeen".