53798209 has 4 divisors (see below), whose sum is σ = 54301104. Its totient is φ = 53295316.

The previous prime is 53798207. The next prime is 53798243. The reversal of 53798209 is 90289735.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53798209 - 2¹ = 53798207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53798207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251287 + ... + 251500.

It is an arithmetic number, because the mean of its divisors is an integer number (13575276).

Almost surely, 2^53798209 is an apocalyptic number.

It is an amenable number.

53798209 is a deficient number, since it is larger than the sum of its proper divisors (502895).

53798209 is a wasteful number, since it uses less digits than its factorization.

53798209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502894.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 53798209 is about 7334.7262389267. The cubic root of 53798209 is about 377.5049111242.

The spelling of 53798209 in words is "fifty-three million, seven hundred ninety-eight thousand, two hundred nine".