20161433 has 4 divisors (see below), whose sum is σ = 20186640. Its totient is φ = 20136228.

The previous prime is 20161417. The next prime is 20161441. The reversal of 20161433 is 33416102.

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.

It is a cyclic number.

It is not a de Polignac number, because 20161433 - 2⁴ = 20161417 is a prime.

It is a super-2 number, since 2×20161433² = 812966761226978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20161483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11363 + ... + 13016.

It is an arithmetic number, because the mean of its divisors is an integer number (5046660).

Almost surely, 2^20161433 is an apocalyptic number.

It is an amenable number.

20161433 is a deficient number, since it is larger than the sum of its proper divisors (25207).

20161433 is an equidigital number, since it uses as much as digits as its factorization.

20161433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25206.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20161433 is about 4490.1484385263. The cubic root of 20161433 is about 272.1701330727.

Adding to 20161433 its reverse (33416102), we get a palindrome (53577535).

The spelling of 20161433 in words is "twenty million, one hundred sixty-one thousand, four hundred thirty-three".