161422533 has 24 divisors (see below), whose sum is σ = 244902528. Its totient is φ = 102259872.

The previous prime is 161422529. The next prime is 161422553. The reversal of 161422533 is 335224161.

It is not a de Polignac number, because 161422533 - 2² = 161422529 is a prime.

It is a super-3 number, since 3×161422533³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161422497 and 161422506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161422553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30016 + ... + 34982.

It is an arithmetic number, because the mean of its divisors is an integer number (10204272).

Almost surely, 2^161422533 is an apocalyptic number.

It is an amenable number.

161422533 is a deficient number, since it is larger than the sum of its proper divisors (83479995).

161422533 is a wasteful number, since it uses less digits than its factorization.

161422533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5153 (or 5150 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 161422533 is about 12705.2167632040. The cubic root of 161422533 is about 544.4876738578.

Adding to 161422533 its reverse (335224161), we get a palindrome (496646694).

The spelling of 161422533 in words is "one hundred sixty-one million, four hundred twenty-two thousand, five hundred thirty-three".