163172601 has 12 divisors (see below), whose sum is σ = 236119728. Its totient is φ = 108585144.

The previous prime is 163172599. The next prime is 163172609. The reversal of 163172601 is 106271361.

163172601 is a `hidden beast` number, since 1 + 631 + 7 + 26 + 0 + 1 = 666.

It is not a de Polignac number, because 163172601 - 2¹ = 163172599 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (163172609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11035 + ... + 21168.

It is an arithmetic number, because the mean of its divisors is an integer number (19676644).

Almost surely, 2^163172601 is an apocalyptic number.

It is an amenable number.

163172601 is a deficient number, since it is larger than the sum of its proper divisors (72947127).

163172601 is a wasteful number, since it uses less digits than its factorization.

163172601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32772 (or 32769 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 163172601 is about 12773.9031231648. The cubic root of 163172601 is about 546.4482994507.

The spelling of 163172601 in words is "one hundred sixty-three million, one hundred seventy-two thousand, six hundred one".