172109741 has 2 divisors, whose sum is σ = 172109742. Its totient is φ = 172109740.

The previous prime is 172109711. The next prime is 172109747. The reversal of 172109741 is 147901271.

172109741 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., 150160516 + 21949225 = 12254^2 + 4685^2 .

It is a cyclic number.

It is not a de Polignac number, because 172109741 - 2¹⁴ = 172093357 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 172109698 and 172109707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172109747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86054870 + 86054871.

It is an arithmetic number, because the mean of its divisors is an integer number (86054871).

Almost surely, 2^172109741 is an apocalyptic number.

It is an amenable number.

172109741 is a deficient number, since it is larger than the sum of its proper divisors (1).

172109741 is an equidigital number, since it uses as much as digits as its factorization.

172109741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 172109741 is about 13119.0602178662. The cubic root of 172109741 is about 556.2480271613.

The spelling of 172109741 in words is "one hundred seventy-two million, one hundred nine thousand, seven hundred forty-one".