101601172 has 6 divisors (see below), whose sum is σ = 177802058. Its totient is φ = 50800584.

The previous prime is 101601139. The next prime is 101601187. The reversal of 101601172 is 271106101.

It can be written as a sum of positive squares in only one way, i.e., 66031876 + 35569296 = 8126^2 + 5964^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 12700143 + ... + 12700150.

Almost surely, 2^101601172 is an apocalyptic number.

It is an amenable number.

101601172 is a deficient number, since it is larger than the sum of its proper divisors (76200886).

101601172 is a wasteful number, since it uses less digits than its factorization.

101601172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25400297 (or 25400295 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 101601172 is about 10079.7406712673. The cubic root of 101601172 is about 466.6231050041.

Adding to 101601172 its reverse (271106101), we get a palindrome (372707273).

The spelling of 101601172 in words is "one hundred one million, six hundred one thousand, one hundred seventy-two".