53445669 has 8 divisors (see below), whose sum is σ = 71312640. Its totient is φ = 35604576.

The previous prime is 53445659. The next prime is 53445683. The reversal of 53445669 is 96654435.

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

It is not a de Polignac number, because 53445669 - 2⁴ = 53445653 is a prime.

It is a super-2 number, since 2×53445669² = 5712879069715122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 53445669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53445619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984 + ... + 10385.

It is an arithmetic number, because the mean of its divisors is an integer number (8914080).

Almost surely, 2^53445669 is an apocalyptic number.

It is an amenable number.

53445669 is a deficient number, since it is larger than the sum of its proper divisors (17866971).

53445669 is a wasteful number, since it uses less digits than its factorization.

53445669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12939.

The product of its digits is 388800, while the sum is 42.

The square root of 53445669 is about 7310.6544850649. The cubic root of 53445669 is about 376.6785059931.

The spelling of 53445669 in words is "fifty-three million, four hundred forty-five thousand, six hundred sixty-nine".