54381281 has 2 divisors, whose sum is σ = 54381282. Its totient is φ = 54381280.

The previous prime is 54381253. The next prime is 54381319. The reversal of 54381281 is 18218345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48427681 + 5953600 = 6959^2 + 2440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54381281 is a prime.

It is a super-2 number, since 2×54381281² = 5914647446401922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54381881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27190640 + 27190641.

It is an arithmetic number, because the mean of its divisors is an integer number (27190641).

Almost surely, 2^54381281 is an apocalyptic number.

It is an amenable number.

54381281 is a deficient number, since it is larger than the sum of its proper divisors (1).

54381281 is an equidigital number, since it uses as much as digits as its factorization.

54381281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 32.

The square root of 54381281 is about 7374.3664812647. The cubic root of 54381281 is about 378.8638293146.

The spelling of 54381281 in words is "fifty-four million, three hundred eighty-one thousand, two hundred eighty-one".