54538381 has 2 divisors, whose sum is σ = 54538382. Its totient is φ = 54538380.

The previous prime is 54538369. The next prime is 54538391. The reversal of 54538381 is 18383545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49829481 + 4708900 = 7059^2 + 2170^2 .

It is a cyclic number.

It is not a de Polignac number, because 54538381 - 2⁵ = 54538349 is a prime.

It is a super-2 number, since 2×54538381² = 5948870004202322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54538381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54538301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27269190 + 27269191.

It is an arithmetic number, because the mean of its divisors is an integer number (27269191).

Almost surely, 2^54538381 is an apocalyptic number.

It is an amenable number.

54538381 is a deficient number, since it is larger than the sum of its proper divisors (1).

54538381 is an equidigital number, since it uses as much as digits as its factorization.

54538381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 37.

The square root of 54538381 is about 7385.0105619423. The cubic root of 54538381 is about 379.2283069667.

The spelling of 54538381 in words is "fifty-four million, five hundred thirty-eight thousand, three hundred eighty-one".