53645369 has 2 divisors, whose sum is σ = 53645370. Its totient is φ = 53645368.

The previous prime is 53645357. The next prime is 53645393. The reversal of 53645369 is 96354635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38278969 + 15366400 = 6187^2 + 3920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53645369 is a prime.

It is a super-2 number, since 2×53645369² = 5755651230292322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53645329) 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, 26822684 + 26822685.

It is an arithmetic number, because the mean of its divisors is an integer number (26822685).

Almost surely, 2^53645369 is an apocalyptic number.

It is an amenable number.

53645369 is a deficient number, since it is larger than the sum of its proper divisors (1).

53645369 is an equidigital number, since it uses as much as digits as its factorization.

53645369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 41.

The square root of 53645369 is about 7324.2998982838. The cubic root of 53645369 is about 377.1470765562.

The spelling of 53645369 in words is "fifty-three million, six hundred forty-five thousand, three hundred sixty-nine".