33168157 has 6 divisors (see below), whose sum is σ = 36457694. Its totient is φ = 30152760.

The previous prime is 33168151. The next prime is 33168193. The reversal of 33168157 is 75186133.

It can be written as a sum of positive squares in only one way, i.e., 31595641 + 1572516 = 5621^2 + 1254^2 .

It is not a de Polignac number, because 33168157 - 2¹¹ = 33166109 is a prime.

It is a super-2 number, since 2×33168157² = 2200253277553298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33168151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136938 + ... + 137179.

Almost surely, 2^33168157 is an apocalyptic number.

It is an amenable number.

33168157 is a deficient number, since it is larger than the sum of its proper divisors (3289537).

33168157 is a wasteful number, since it uses less digits than its factorization.

33168157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274139 (or 274128 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 33168157 is about 5759.1802368045. The cubic root of 33168157 is about 321.2973277332.

The spelling of 33168157 in words is "thirty-three million, one hundred sixty-eight thousand, one hundred fifty-seven".