54185213 has 2 divisors, whose sum is σ = 54185214. Its totient is φ = 54185212.

The previous prime is 54185177. The next prime is 54185227. The reversal of 54185213 is 31258145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47844889 + 6340324 = 6917^2 + 2518^2 .

It is a cyclic number.

It is not a de Polignac number, because 54185213 - 2¹⁶ = 54119677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54185233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27092606 + 27092607.

It is an arithmetic number, because the mean of its divisors is an integer number (27092607).

Almost surely, 2^54185213 is an apocalyptic number.

It is an amenable number.

54185213 is a deficient number, since it is larger than the sum of its proper divisors (1).

54185213 is an equidigital number, since it uses as much as digits as its factorization.

54185213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

The square root of 54185213 is about 7361.0605893444. The cubic root of 54185213 is about 378.4079584380.

The spelling of 54185213 in words is "fifty-four million, one hundred eighty-five thousand, two hundred thirteen".