554117221 has 8 divisors (see below), whose sum is σ = 648004544. Its totient is φ = 463911840.

The previous prime is 554117191. The next prime is 554117303. The reversal of 554117221 is 122711455.

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

It is not a de Polignac number, because 554117221 - 2⁷ = 554117093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 554117221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554117621) 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 7 ways as a sum of consecutive naturals, for example, 920160 + ... + 920761.

It is an arithmetic number, because the mean of its divisors is an integer number (81000568).

Almost surely, 2^554117221 is an apocalyptic number.

It is an amenable number.

554117221 is a deficient number, since it is larger than the sum of its proper divisors (93887323).

554117221 is a wasteful number, since it uses less digits than its factorization.

554117221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840971.

The product of its digits is 2800, while the sum is 28.

The square root of 554117221 is about 23539.6945817060. The cubic root of 554117221 is about 821.3606306980.

Adding to 554117221 its reverse (122711455), we get a palindrome (676828676).

The spelling of 554117221 in words is "five hundred fifty-four million, one hundred seventeen thousand, two hundred twenty-one".