1229172253 has 2 divisors, whose sum is σ = 1229172254. Its totient is φ = 1229172252.

The previous prime is 1229172239. The next prime is 1229172281. The reversal of 1229172253 is 3522719221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 809004249 + 420168004 = 28443^2 + 20498^2 .

It is a cyclic number.

It is not a de Polignac number, because 1229172253 - 2¹³ = 1229164061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1229172223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614586126 + 614586127.

It is an arithmetic number, because the mean of its divisors is an integer number (614586127).

Almost surely, 2^1229172253 is an apocalyptic number.

It is an amenable number.

1229172253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229172253 is an equidigital number, since it uses as much as digits as its factorization.

1229172253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 1229172253 is about 35059.5529492320. The cubic root of 1229172253 is about 1071.2008682496.

The spelling of 1229172253 in words is "one billion, two hundred twenty-nine million, one hundred seventy-two thousand, two hundred fifty-three".