71782253 has 2 divisors, whose sum is σ = 71782254. Its totient is φ = 71782252.

The previous prime is 71782237. The next prime is 71782289. The reversal of 71782253 is 35228717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54125449 + 17656804 = 7357^2 + 4202^2 .

It is a cyclic number.

It is not a de Polignac number, because 71782253 - 2⁴ = 71782237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71782213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35891126 + 35891127.

It is an arithmetic number, because the mean of its divisors is an integer number (35891127).

Almost surely, 2^71782253 is an apocalyptic number.

It is an amenable number.

71782253 is a deficient number, since it is larger than the sum of its proper divisors (1).

71782253 is an equidigital number, since it uses as much as digits as its factorization.

71782253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 35.

The square root of 71782253 is about 8472.4407935376. The cubic root of 71782253 is about 415.5969596324.

The spelling of 71782253 in words is "seventy-one million, seven hundred eighty-two thousand, two hundred fifty-three".