53209173 has 8 divisors (see below), whose sum is σ = 71107488. Its totient is φ = 35391824.

The previous prime is 53209159. The next prime is 53209183. The reversal of 53209173 is 37190235.

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

It is a cyclic number.

It is not a de Polignac number, because 53209173 - 2¹⁰ = 53208149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53209173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53209153) 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, 18690 + ... + 21347.

It is an arithmetic number, because the mean of its divisors is an integer number (8888436).

Almost surely, 2^53209173 is an apocalyptic number.

It is an amenable number.

53209173 is a deficient number, since it is larger than the sum of its proper divisors (17898315).

53209173 is a wasteful number, since it uses less digits than its factorization.

53209173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40483.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 53209173 is about 7294.4618033135. The cubic root of 53209173 is about 376.1220862223.

The spelling of 53209173 in words is "fifty-three million, two hundred nine thousand, one hundred seventy-three".