172006153 has 24 divisors (see below), whose sum is σ = 202826304. Its totient is φ = 144595200.

The previous prime is 172006151. The next prime is 172006157. The reversal of 172006153 is 351600271.

It is not a de Polignac number, because 172006153 - 2¹ = 172006151 is a prime.

It is a super-2 number, since 2×172006153² = 59172233339718818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172006151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193476 + ... + 194362.

It is an arithmetic number, because the mean of its divisors is an integer number (8451096).

Almost surely, 2^172006153 is an apocalyptic number.

It is an amenable number.

172006153 is a deficient number, since it is larger than the sum of its proper divisors (30820151).

172006153 is a wasteful number, since it uses less digits than its factorization.

172006153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 172006153 is about 13115.1116274319. Note that the first 3 decimals coincide. The cubic root of 172006153 is about 556.1364080973.

The spelling of 172006153 in words is "one hundred seventy-two million, six thousand, one hundred fifty-three".