53645389 has 8 divisors (see below), whose sum is σ = 63423360. Its totient is φ = 44396016.

The previous prime is 53645369. The next prime is 53645393. The reversal of 53645389 is 98354635.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53645389 - 2⁵ = 53645357 is a prime.

It is a super-2 number, since 2×53645389² = 5755655521922642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a 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 in 7 ways as a sum of consecutive naturals, for example, 131929 + ... + 132334.

It is an arithmetic number, because the mean of its divisors is an integer number (7927920).

Almost surely, 2^53645389 is an apocalyptic number.

It is an amenable number.

53645389 is a deficient number, since it is larger than the sum of its proper divisors (9777971).

53645389 is a wasteful number, since it uses less digits than its factorization.

53645389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264299.

The product of its digits is 388800, while the sum is 43.

The square root of 53645389 is about 7324.3012636019. The cubic root of 53645389 is about 377.1471234254.

The spelling of 53645389 in words is "fifty-three million, six hundred forty-five thousand, three hundred eighty-nine".