232172749 has 2 divisors, whose sum is σ = 232172750. Its totient is φ = 232172748.

The previous prime is 232172713. The next prime is 232172779. The reversal of 232172749 is 947271232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231587524 + 585225 = 15218^2 + 765^2 .

It is a cyclic number.

It is not a de Polignac number, because 232172749 - 2¹³ = 232164557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232172779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116086374 + 116086375.

It is an arithmetic number, because the mean of its divisors is an integer number (116086375).

Almost surely, 2^232172749 is an apocalyptic number.

It is an amenable number.

232172749 is a deficient number, since it is larger than the sum of its proper divisors (1).

232172749 is an equidigital number, since it uses as much as digits as its factorization.

232172749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 232172749 is about 15237.2159202395. The cubic root of 232172749 is about 614.6158386955.

The spelling of 232172749 in words is "two hundred thirty-two million, one hundred seventy-two thousand, seven hundred forty-nine".