172253755 has 4 divisors (see below), whose sum is σ = 206704512. Its totient is φ = 137803000.

The previous prime is 172253749. The next prime is 172253771. The reversal of 172253755 is 557352271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557352271 = 7 ⋅79621753.

It is not a de Polignac number, because 172253755 - 2⁵ = 172253723 is a prime.

It is a super-3 number, since 3×172253755³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17225371 + ... + 17225380.

It is an arithmetic number, because the mean of its divisors is an integer number (51676128).

Almost surely, 2^172253755 is an apocalyptic number.

172253755 is a deficient number, since it is larger than the sum of its proper divisors (34450757).

172253755 is an equidigital number, since it uses as much as digits as its factorization.

172253755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34450756.

The product of its digits is 73500, while the sum is 37.

The square root of 172253755 is about 13124.5478017340. The cubic root of 172253755 is about 556.4031320182.

The spelling of 172253755 in words is "one hundred seventy-two million, two hundred fifty-three thousand, seven hundred fifty-five".