53149209 has 8 divisors (see below), whose sum is σ = 70915680. Its totient is φ = 35407776.

The previous prime is 53149193. The next prime is 53149223. The reversal of 53149209 is 90294135.

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

It is not a de Polignac number, because 53149209 - 2⁴ = 53149193 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53149209.

It is not an unprimeable number, because it can be changed into a prime (53149249) 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, 564 + ... + 10325.

It is an arithmetic number, because the mean of its divisors is an integer number (8864460).

Almost surely, 2^53149209 is an apocalyptic number.

It is an amenable number.

53149209 is a deficient number, since it is larger than the sum of its proper divisors (17766471).

53149209 is a wasteful number, since it uses less digits than its factorization.

53149209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12519.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 53149209 is about 7290.3504031013. The cubic root of 53149209 is about 375.9807430344.

The spelling of 53149209 in words is "fifty-three million, one hundred forty-nine thousand, two hundred nine".