54027409 has 2 divisors, whose sum is σ = 54027410. Its totient is φ = 54027408.

The previous prime is 54027367. The next prime is 54027419. The reversal of 54027409 is 90472045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 14085009 = 6320^2 + 3753^2 .

It is a cyclic number.

It is not a de Polignac number, because 54027409 - 2⁹ = 54026897 is a prime.

It is equal to p_3227719 and since 54027409 and 3227719 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (54027419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27013704 + 27013705.

It is an arithmetic number, because the mean of its divisors is an integer number (27013705).

Almost surely, 2^54027409 is an apocalyptic number.

It is an amenable number.

54027409 is a deficient number, since it is larger than the sum of its proper divisors (1).

54027409 is an equidigital number, since it uses as much as digits as its factorization.

54027409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 54027409 is about 7350.3339379922. Note that the first 3 decimals coincide. The cubic root of 54027409 is about 378.0402544777.

The spelling of 54027409 in words is "fifty-four million, twenty-seven thousand, four hundred nine".