172735373 has 2 divisors, whose sum is σ = 172735374. Its totient is φ = 172735372.

The previous prime is 172735319. The next prime is 172735399. The reversal of 172735373 is 373537271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168013444 + 4721929 = 12962^2 + 2173^2 .

It is a cyclic number.

It is not a de Polignac number, because 172735373 - 2²⁰ = 171686797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172795373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86367686 + 86367687.

It is an arithmetic number, because the mean of its divisors is an integer number (86367687).

Almost surely, 2^172735373 is an apocalyptic number.

It is an amenable number.

172735373 is a deficient number, since it is larger than the sum of its proper divisors (1).

172735373 is an equidigital number, since it uses as much as digits as its factorization.

172735373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92610, while the sum is 38.

The square root of 172735373 is about 13142.8829790119. The cubic root of 172735373 is about 556.9212134211.

The spelling of 172735373 in words is "one hundred seventy-two million, seven hundred thirty-five thousand, three hundred seventy-three".