219985253 has 4 divisors (see below), whose sum is σ = 232925580. Its totient is φ = 207044928.

The previous prime is 219985247. The next prime is 219985273. The reversal of 219985253 is 352589912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111471364 + 108513889 = 10558^2 + 10417^2 .

It is a cyclic number.

It is not a de Polignac number, because 219985253 - 2⁶ = 219985189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219985273) 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, 6470138 + ... + 6470171.

It is an arithmetic number, because the mean of its divisors is an integer number (58231395).

Almost surely, 2^219985253 is an apocalyptic number.

It is an amenable number.

219985253 is a deficient number, since it is larger than the sum of its proper divisors (12940327).

219985253 is a wasteful number, since it uses less digits than its factorization.

219985253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12940326.

The product of its digits is 194400, while the sum is 44.

The square root of 219985253 is about 14831.8998445917. The cubic root of 219985253 is about 603.6675847650.

The spelling of 219985253 in words is "two hundred nineteen million, nine hundred eighty-five thousand, two hundred fifty-three".