220506433 has 4 divisors (see below), whose sum is σ = 252007360. Its totient is φ = 189005508.

The previous prime is 220506427. The next prime is 220506437. The reversal of 220506433 is 334605022.

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: 334605022 = 2 ⋅167302511.

It is a cyclic number.

It is not a de Polignac number, because 220506433 - 2²¹ = 218409281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220506398 and 220506407.

It is not an unprimeable number, because it can be changed into a prime (220506437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15750453 + ... + 15750466.

It is an arithmetic number, because the mean of its divisors is an integer number (63001840).

Almost surely, 2^220506433 is an apocalyptic number.

It is an amenable number.

220506433 is a deficient number, since it is larger than the sum of its proper divisors (31500927).

220506433 is an equidigital number, since it uses as much as digits as its factorization.

220506433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31500926.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 220506433 is about 14849.4590137149. The cubic root of 220506433 is about 604.1439369036.

The spelling of 220506433 in words is "two hundred twenty million, five hundred six thousand, four hundred thirty-three".