171772253 has 2 divisors, whose sum is σ = 171772254. Its totient is φ = 171772252.

The previous prime is 171772243. The next prime is 171772259. The reversal of 171772253 is 352277171.

171772253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106048804 + 65723449 = 10298^2 + 8107^2 .

It is a cyclic number.

It is not a de Polignac number, because 171772253 - 2⁶ = 171772189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171772259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85886126 + 85886127.

It is an arithmetic number, because the mean of its divisors is an integer number (85886127).

Almost surely, 2^171772253 is an apocalyptic number.

It is an amenable number.

171772253 is a deficient number, since it is larger than the sum of its proper divisors (1).

171772253 is an equidigital number, since it uses as much as digits as its factorization.

171772253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20580, while the sum is 35.

The square root of 171772253 is about 13106.1913994875. The cubic root of 171772253 is about 555.8842091483.

The spelling of 171772253 in words is "one hundred seventy-one million, seven hundred seventy-two thousand, two hundred fifty-three".