53719209 has 6 divisors (see below), whose sum is σ = 77594426. Its totient is φ = 35812800.

The previous prime is 53719189. The next prime is 53719217. The reversal of 53719209 is 90291735.

53719209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 52881984 + 837225 = 7272^2 + 915^2 .

It is not a de Polignac number, because 53719209 - 2¹² = 53715113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53719219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2984392 + ... + 2984409.

Almost surely, 2^53719209 is an apocalyptic number.

It is an amenable number.

53719209 is a deficient number, since it is larger than the sum of its proper divisors (23875217).

53719209 is a wasteful number, since it uses less digits than its factorization.

53719209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5968807 (or 5968804 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 53719209 is about 7329.3389197117. The cubic root of 53719209 is about 377.3200381934.

The spelling of 53719209 in words is "fifty-three million, seven hundred nineteen thousand, two hundred nine".