153864221 has 8 divisors (see below), whose sum is σ = 175920000. Its totient is φ = 131827248.

The previous prime is 153864203. The next prime is 153864233. The reversal of 153864221 is 122468351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 153864221 - 2⁶ = 153864157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153864251) 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 7 ways as a sum of consecutive naturals, for example, 28280 + ... + 33278.

It is an arithmetic number, because the mean of its divisors is an integer number (21990000).

Almost surely, 2^153864221 is an apocalyptic number.

It is an amenable number.

153864221 is a deficient number, since it is larger than the sum of its proper divisors (22055779).

153864221 is an equidigital number, since it uses as much as digits as its factorization.

153864221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9403.

The product of its digits is 11520, while the sum is 32.

The square root of 153864221 is about 12404.2017477950. The cubic root of 153864221 is about 535.8532644390.

The spelling of 153864221 in words is "one hundred fifty-three million, eight hundred sixty-four thousand, two hundred twenty-one".