173722493 has 6 divisors (see below), whose sum is σ = 202085406. Its totient is φ = 148904952.

The previous prime is 173722487. The next prime is 173722561. The reversal of 173722493 is 394227371.

It can be written as a sum of positive squares in only one way, i.e., 166978084 + 6744409 = 12922^2 + 2597^2 .

It is not a de Polignac number, because 173722493 - 2⁶ = 173722429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173722433) 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 in 5 ways as a sum of consecutive naturals, for example, 1772630 + ... + 1772727.

It is an arithmetic number, because the mean of its divisors is an integer number (33680901).

Almost surely, 2^173722493 is an apocalyptic number.

It is an amenable number.

173722493 is a deficient number, since it is larger than the sum of its proper divisors (28362913).

173722493 is an equidigital number, since it uses as much as digits as its factorization.

173722493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3545371 (or 3545364 counting only the distinct ones).

The product of its digits is 63504, while the sum is 38.

The square root of 173722493 is about 13180.3828851821. The cubic root of 173722493 is about 557.9800665618.

The spelling of 173722493 in words is "one hundred seventy-three million, seven hundred twenty-two thousand, four hundred ninety-three".