172033649 has 2 divisors, whose sum is σ = 172033650. Its totient is φ = 172033648.

The previous prime is 172033627. The next prime is 172033661. The reversal of 172033649 is 946330271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151167025 + 20866624 = 12295^2 + 4568^2 .

It is a cyclic number.

It is not a de Polignac number, because 172033649 - 2¹⁶ = 171968113 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (172003649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86016824 + 86016825.

It is an arithmetic number, because the mean of its divisors is an integer number (86016825).

Almost surely, 2^172033649 is an apocalyptic number.

It is an amenable number.

172033649 is a deficient number, since it is larger than the sum of its proper divisors (1).

172033649 is an equidigital number, since it uses as much as digits as its factorization.

172033649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 172033649 is about 13116.1598419659. The cubic root of 172033649 is about 556.1660401999.

The spelling of 172033649 in words is "one hundred seventy-two million, thirty-three thousand, six hundred forty-nine".