153220433 has 4 divisors (see below), whose sum is σ = 153312420. Its totient is φ = 153128448.

The previous prime is 153220409. The next prime is 153220447. The reversal of 153220433 is 334022351.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 149621824 + 3598609 = 12232^2 + 1897^2 .

It is a cyclic number.

It is not a de Polignac number, because 153220433 - 2²⁰ = 152171857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 153220399 and 153220408.

It is not an unprimeable number, because it can be changed into a prime (153220453) 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, 43448 + ... + 46841.

It is an arithmetic number, because the mean of its divisors is an integer number (38328105).

Almost surely, 2^153220433 is an apocalyptic number.

It is an amenable number.

153220433 is a deficient number, since it is larger than the sum of its proper divisors (91987).

153220433 is an equidigital number, since it uses as much as digits as its factorization.

153220433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91986.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 153220433 is about 12378.2241456519. The cubic root of 153220433 is about 535.1048596396.

Adding to 153220433 its reverse (334022351), we get a palindrome (487242784).

The spelling of 153220433 in words is "one hundred fifty-three million, two hundred twenty thousand, four hundred thirty-three".