211161253 has 2 divisors, whose sum is σ = 211161254. Its totient is φ = 211161252.

The previous prime is 211161241. The next prime is 211161283. The reversal of 211161253 is 352161112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130484929 + 80676324 = 11423^2 + 8982^2 .

It is a cyclic number.

It is not a de Polignac number, because 211161253 - 2⁵ = 211161221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211161283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105580626 + 105580627.

It is an arithmetic number, because the mean of its divisors is an integer number (105580627).

Almost surely, 2^211161253 is an apocalyptic number.

It is an amenable number.

211161253 is a deficient number, since it is larger than the sum of its proper divisors (1).

211161253 is an equidigital number, since it uses as much as digits as its factorization.

211161253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 22.

The square root of 211161253 is about 14531.3885434256. The cubic root of 211161253 is about 595.4858005522.

The spelling of 211161253 in words is "two hundred eleven million, one hundred sixty-one thousand, two hundred fifty-three".