53786389 has 2 divisors, whose sum is σ = 53786390. Its totient is φ = 53786388.

The previous prime is 53786371. The next prime is 53786399. The reversal of 53786389 is 98368735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47196900 + 6589489 = 6870^2 + 2567^2 .

It is a cyclic number.

It is not a de Polignac number, because 53786389 - 2⁵ = 53786357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53786339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26893194 + 26893195.

It is an arithmetic number, because the mean of its divisors is an integer number (26893195).

Almost surely, 2^53786389 is an apocalyptic number.

It is an amenable number.

53786389 is a deficient number, since it is larger than the sum of its proper divisors (1).

53786389 is an equidigital number, since it uses as much as digits as its factorization.

53786389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 53786389 is about 7333.9204386194. The cubic root of 53786389 is about 377.4772619084.

The spelling of 53786389 in words is "fifty-three million, seven hundred eighty-six thousand, three hundred eighty-nine".