53388289 has 2 divisors, whose sum is σ = 53388290. Its totient is φ = 53388288.

The previous prime is 53388281. The next prime is 53388301. The reversal of 53388289 is 98288335.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30030400 + 23357889 = 5480^2 + 4833^2 .

It is a cyclic number.

It is not a de Polignac number, because 53388289 - 2³ = 53388281 is a prime.

It is not a weakly prime, because it can be changed into another prime (53388281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26694144 + 26694145.

It is an arithmetic number, because the mean of its divisors is an integer number (26694145).

Almost surely, 2^53388289 is an apocalyptic number.

It is an amenable number.

53388289 is a deficient number, since it is larger than the sum of its proper divisors (1).

53388289 is an equidigital number, since it uses as much as digits as its factorization.

53388289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The square root of 53388289 is about 7306.7290219359. The cubic root of 53388289 is about 376.5436553266.

Adding to 53388289 its sum of digits (46), we get a palindrome (53388335).

The spelling of 53388289 in words is "fifty-three million, three hundred eighty-eight thousand, two hundred eighty-nine".