53205211 has 4 divisors (see below), whose sum is σ = 53344512. Its totient is φ = 53065912.

The previous prime is 53205193. The next prime is 53205221. The reversal of 53205211 is 11250235.

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

It is a cyclic number.

It is not a de Polignac number, because 53205211 - 2²⁵ = 19650779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53205221) 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, 69076 + ... + 69841.

It is an arithmetic number, because the mean of its divisors is an integer number (13336128).

Almost surely, 2^53205211 is an apocalyptic number.

53205211 is a deficient number, since it is larger than the sum of its proper divisors (139301).

53205211 is a wasteful number, since it uses less digits than its factorization.

53205211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139300.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 53205211 is about 7294.1902223619. The cubic root of 53205211 is about 376.1127505344.

Adding to 53205211 its reverse (11250235), we get a palindrome (64455446).

The spelling of 53205211 in words is "fifty-three million, two hundred five thousand, two hundred eleven".