33157861 has 8 divisors (see below), whose sum is σ = 36229824. Its totient is φ = 30095520.

The previous prime is 33157849. The next prime is 33157867. The reversal of 33157861 is 16875133.

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

It is a cyclic number.

It is not a de Polignac number, because 33157861 - 2¹¹ = 33155813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33157867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6145 + ... + 10201.

It is an arithmetic number, because the mean of its divisors is an integer number (4528728).

Almost surely, 2^33157861 is an apocalyptic number.

It is an amenable number.

33157861 is a deficient number, since it is larger than the sum of its proper divisors (3071963).

33157861 is a wasteful number, since it uses less digits than its factorization.

33157861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4811.

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

The square root of 33157861 is about 5758.2862902082. The cubic root of 33157861 is about 321.2640787786.

The spelling of 33157861 in words is "thirty-three million, one hundred fifty-seven thousand, eight hundred sixty-one".