253520211 has 16 divisors (see below), whose sum is σ = 406649600. Its totient is φ = 137243808.

The previous prime is 253520207. The next prime is 253520213. The reversal of 253520211 is 112025352.

It is not a de Polignac number, because 253520211 - 2² = 253520207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (253520213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317296 + ... + 318093.

It is an arithmetic number, because the mean of its divisors is an integer number (25415600).

Almost surely, 2^253520211 is an apocalyptic number.

253520211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

253520211 is a deficient number, since it is larger than the sum of its proper divisors (153129389).

253520211 is a wasteful number, since it uses less digits than its factorization.

253520211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635418.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 253520211 is about 15922.3180159172. The cubic root of 253520211 is about 632.9035464196.

Adding to 253520211 its reverse (112025352), we get a palindrome (365545563).

The spelling of 253520211 in words is "two hundred fifty-three million, five hundred twenty thousand, two hundred eleven".