172473541 has 2 divisors, whose sum is σ = 172473542. Its totient is φ = 172473540.

The previous prime is 172473487. The next prime is 172473569. The reversal of 172473541 is 145374271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165868641 + 6604900 = 12879^2 + 2570^2 .

It is a cyclic number.

It is not a de Polignac number, because 172473541 - 2²¹ = 170376389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172473497 and 172473506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172473341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86236770 + 86236771.

It is an arithmetic number, because the mean of its divisors is an integer number (86236771).

Almost surely, 2^172473541 is an apocalyptic number.

It is an amenable number.

172473541 is a deficient number, since it is larger than the sum of its proper divisors (1).

172473541 is an equidigital number, since it uses as much as digits as its factorization.

172473541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 34.

The square root of 172473541 is about 13132.9182210200. The cubic root of 172473541 is about 556.6396776968.

The spelling of 172473541 in words is "one hundred seventy-two million, four hundred seventy-three thousand, five hundred forty-one".