172155382 has 16 divisors (see below), whose sum is σ = 295293600. Its totient is φ = 73738368.

The previous prime is 172155341. The next prime is 172155383. The reversal of 172155382 is 283551271.

172155382 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172155383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40494 + ... + 44542.

It is an arithmetic number, because the mean of its divisors is an integer number (18455850).

Almost surely, 2^172155382 is an apocalyptic number.

172155382 is a deficient number, since it is larger than the sum of its proper divisors (123138218).

172155382 is a wasteful number, since it uses less digits than its factorization.

172155382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7095.

The product of its digits is 16800, while the sum is 34.

The square root of 172155382 is about 13120.7995945369. The cubic root of 172155382 is about 556.2971924443.

The spelling of 172155382 in words is "one hundred seventy-two million, one hundred fifty-five thousand, three hundred eighty-two".