53421211 has 4 divisors (see below), whose sum is σ = 53660992. Its totient is φ = 53181432.

The previous prime is 53421209. The next prime is 53421239. The reversal of 53421211 is 11212435.

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 53421211 - 2¹ = 53421209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53421241) 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, 119556 + ... + 120001.

It is an arithmetic number, because the mean of its divisors is an integer number (13415248).

Almost surely, 2^53421211 is an apocalyptic number.

53421211 is a deficient number, since it is larger than the sum of its proper divisors (239781).

53421211 is a wasteful number, since it uses less digits than its factorization.

53421211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239780.

The product of its digits is 240, while the sum is 19.

The square root of 53421211 is about 7308.9815295977. The cubic root of 53421211 is about 376.6210382334.

Adding to 53421211 its reverse (11212435), we get a palindrome (64633646).

The spelling of 53421211 in words is "fifty-three million, four hundred twenty-one thousand, two hundred eleven".