53400289 has 2 divisors, whose sum is σ = 53400290. Its totient is φ = 53400288.

The previous prime is 53400283. The next prime is 53400323. The reversal of 53400289 is 98200435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38539264 + 14861025 = 6208^2 + 3855^2 .

It is a cyclic number.

It is not a de Polignac number, because 53400289 - 2⁹ = 53399777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53400289.

It is not a weakly prime, because it can be changed into another prime (53400283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26700144 + 26700145.

It is an arithmetic number, because the mean of its divisors is an integer number (26700145).

Almost surely, 2^53400289 is an apocalyptic number.

It is an amenable number.

53400289 is a deficient number, since it is larger than the sum of its proper divisors (1).

53400289 is an equidigital number, since it uses as much as digits as its factorization.

53400289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 53400289 is about 7307.5501366737. The cubic root of 53400289 is about 376.5718649175.

The spelling of 53400289 in words is "fifty-three million, four hundred thousand, two hundred eighty-nine".