172732741 has 2 divisors, whose sum is σ = 172732742. Its totient is φ = 172732740.

The previous prime is 172732739. The next prime is 172732757. The reversal of 172732741 is 147237271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93896100 + 78836641 = 9690^2 + 8879^2 .

It is an emirp because it is prime and its reverse (147237271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172732741 - 2¹ = 172732739 is a prime.

Together with 172732739, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 172732697 and 172732706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172732771) 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, 86366370 + 86366371.

It is an arithmetic number, because the mean of its divisors is an integer number (86366371).

Almost surely, 2^172732741 is an apocalyptic number.

It is an amenable number.

172732741 is a deficient number, since it is larger than the sum of its proper divisors (1).

172732741 is an equidigital number, since it uses as much as digits as its factorization.

172732741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16464, while the sum is 34.

The square root of 172732741 is about 13142.7828483925. The cubic root of 172732741 is about 556.9183847704.

The spelling of 172732741 in words is "one hundred seventy-two million, seven hundred thirty-two thousand, seven hundred forty-one".