554201221 has 20 divisors (see below), whose sum is σ = 655837344. Its totient is φ = 468195000.

The previous prime is 554201213. The next prime is 554201251. The reversal of 554201221 is 122102455.

It is not a de Polignac number, because 554201221 - 2³ = 554201213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 554201192 and 554201201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554201251) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 168846 + ... + 172096.

Almost surely, 2^554201221 is an apocalyptic number.

It is an amenable number.

554201221 is a deficient number, since it is larger than the sum of its proper divisors (101636123).

554201221 is an frugal number, since it uses more digits than its factorization.

554201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350 (or 3329 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 554201221 is about 23541.4787343531. The cubic root of 554201221 is about 821.4021326307.

Adding to 554201221 its reverse (122102455), we get a palindrome (676303676).

The spelling of 554201221 in words is "five hundred fifty-four million, two hundred one thousand, two hundred twenty-one".