8153172 has 36 divisors (see below), whose sum is σ = 21169876. Its totient is φ = 2643840.

The previous prime is 8153153. The next prime is 8153177. The reversal of 8153172 is 2713518.

It can be written as a sum of positive squares in 2 ways, for example, as 4137156 + 4016016 = 2034^2 + 2004^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×8153172³ (a number of 22 digits) contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8153177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1729 + ... + 4392.

Almost surely, 2^8153172 is an apocalyptic number.

It is an amenable number.

8153172 is an abundant number, since it is smaller than the sum of its proper divisors (13016704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8153172 is a wasteful number, since it uses less digits than its factorization.

8153172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6168 (or 6163 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 8153172 is about 2855.3759822482. The cubic root of 8153172 is about 201.2683724852.

The spelling of 8153172 in words is "eight million, one hundred fifty-three thousand, one hundred seventy-two".