172725493 has 2 divisors, whose sum is σ = 172725494. Its totient is φ = 172725492.

The previous prime is 172725473. The next prime is 172725533. The reversal of 172725493 is 394527271.

It is an a-pointer prime, because the next prime (172725533) can be obtained adding 172725493 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117029124 + 55696369 = 10818^2 + 7463^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172725493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172725403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86362746 + 86362747.

It is an arithmetic number, because the mean of its divisors is an integer number (86362747).

Almost surely, 2^172725493 is an apocalyptic number.

It is an amenable number.

172725493 is a deficient number, since it is larger than the sum of its proper divisors (1).

172725493 is an equidigital number, since it uses as much as digits as its factorization.

172725493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 40.

The square root of 172725493 is about 13142.5071048107. The cubic root of 172725493 is about 556.9105950855.

The spelling of 172725493 in words is "one hundred seventy-two million, seven hundred twenty-five thousand, four hundred ninety-three".