153143221 has 16 divisors (see below), whose sum is σ = 191213568. Its totient is φ = 119156400.

The previous prime is 153143213. The next prime is 153143231. The reversal of 153143221 is 122341351.

It is a happy number.

It is not a de Polignac number, because 153143221 - 2³ = 153143213 is a prime.

It is a super-2 number, since 2×153143221² = 46905692276509682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 153143192 and 153143201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153143201) 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 15 ways as a sum of consecutive naturals, for example, 80916 + ... + 82786.

It is an arithmetic number, because the mean of its divisors is an integer number (11950848).

Almost surely, 2^153143221 is an apocalyptic number.

153143221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

153143221 is a deficient number, since it is larger than the sum of its proper divisors (38070347).

153143221 is a wasteful number, since it uses less digits than its factorization.

153143221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2952.

The product of its digits is 720, while the sum is 22.

The square root of 153143221 is about 12375.1048884444. The cubic root of 153143221 is about 535.0149598402.

Adding to 153143221 its reverse (122341351), we get a palindrome (275484572).

The spelling of 153143221 in words is "one hundred fifty-three million, one hundred forty-three thousand, two hundred twenty-one".