172740755 has 8 divisors (see below), whose sum is σ = 226133424. Its totient is φ = 125629600.

The previous prime is 172740713. The next prime is 172740769. The reversal of 172740755 is 557047271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172740755 - 2⁸ = 172740499 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1570316 + ... + 1570425.

It is an arithmetic number, because the mean of its divisors is an integer number (28266678).

Almost surely, 2^172740755 is an apocalyptic number.

172740755 is a deficient number, since it is larger than the sum of its proper divisors (53392669).

172740755 is a wasteful number, since it uses less digits than its factorization.

172740755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140757.

The product of its (nonzero) digits is 68600, while the sum is 38.

The square root of 172740755 is about 13143.0877270145. The cubic root of 172740755 is about 556.9269974494.

The spelling of 172740755 in words is "one hundred seventy-two million, seven hundred forty thousand, seven hundred fifty-five".