554733221 has 4 divisors (see below), whose sum is σ = 633980832. Its totient is φ = 475485612.

The previous prime is 554733211. The next prime is 554733227. The reversal of 554733221 is 122337455.

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.

It is not a de Polignac number, because 554733221 - 2¹⁸ = 554471077 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 (554733227) 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, 39623795 + ... + 39623808.

It is an arithmetic number, because the mean of its divisors is an integer number (158495208).

Almost surely, 2^554733221 is an apocalyptic number.

It is an amenable number.

554733221 is a deficient number, since it is larger than the sum of its proper divisors (79247611).

554733221 is an equidigital number, since it uses as much as digits as its factorization.

554733221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79247610.

The product of its digits is 25200, while the sum is 32.

The square root of 554733221 is about 23552.7752292591. The cubic root of 554733221 is about 821.6648808683.

The spelling of 554733221 in words is "five hundred fifty-four million, seven hundred thirty-three thousand, two hundred twenty-one".