33622161 has 4 divisors (see below), whose sum is σ = 44829552. Its totient is φ = 22414772.

The previous prime is 33622139. The next prime is 33622177. The reversal of 33622161 is 16122633.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16122633 = 3 ⋅5374211.

It is a cyclic number.

It is not a de Polignac number, because 33622161 - 2⁶ = 33622097 is a prime.

It is a super-2 number, since 2×33622161² = 2260899420619842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33622111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5603691 + ... + 5603696.

It is an arithmetic number, because the mean of its divisors is an integer number (11207388).

Almost surely, 2^33622161 is an apocalyptic number.

It is an amenable number.

33622161 is a deficient number, since it is larger than the sum of its proper divisors (11207391).

33622161 is a wasteful number, since it uses less digits than its factorization.

33622161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11207390.

The product of its digits is 1296, while the sum is 24.

The square root of 33622161 is about 5798.4619512419. The cubic root of 33622161 is about 322.7566564555.

Adding to 33622161 its reverse (16122633), we get a palindrome (49744794).

The spelling of 33622161 in words is "thirty-three million, six hundred twenty-two thousand, one hundred sixty-one".