33157229 has 8 divisors (see below), whose sum is σ = 37939968. Its totient is φ = 28386000.

The previous prime is 33157211. The next prime is 33157253. The reversal of 33157229 is 92275133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33157229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33157195 and 33157204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33151229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4604 + ... + 9354.

It is an arithmetic number, because the mean of its divisors is an integer number (4742496).

Almost surely, 2^33157229 is an apocalyptic number.

It is an amenable number.

33157229 is a deficient number, since it is larger than the sum of its proper divisors (4782739).

33157229 is an equidigital number, since it uses as much as digits as its factorization.

33157229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5755.

The product of its digits is 11340, while the sum is 32.

The square root of 33157229 is about 5758.2314125085. The cubic root of 33157229 is about 321.2620376318.

The spelling of 33157229 in words is "thirty-three million, one hundred fifty-seven thousand, two hundred twenty-nine".