172266733 has 2 divisors, whose sum is σ = 172266734. Its totient is φ = 172266732.

The previous prime is 172266631. The next prime is 172266739. The reversal of 172266733 is 337662271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138603529 + 33663204 = 11773^2 + 5802^2 .

It is a cyclic number.

It is not a de Polignac number, because 172266733 - 2⁹ = 172266221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172266692 and 172266701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172266739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86133366 + 86133367.

It is an arithmetic number, because the mean of its divisors is an integer number (86133367).

Almost surely, 2^172266733 is an apocalyptic number.

It is an amenable number.

172266733 is a deficient number, since it is larger than the sum of its proper divisors (1).

172266733 is an equidigital number, since it uses as much as digits as its factorization.

172266733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 37.

The square root of 172266733 is about 13125.0422094559. The cubic root of 172266733 is about 556.4171052376.

The spelling of 172266733 in words is "one hundred seventy-two million, two hundred sixty-six thousand, seven hundred thirty-three".