554968621 has 32 divisors (see below), whose sum is σ = 636387840. Its totient is φ = 481238016.

The previous prime is 554968619. The next prime is 554968643. The reversal of 554968621 is 126869455.

It is a cyclic number.

It is not a de Polignac number, because 554968621 - 2¹ = 554968619 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 (554968681) 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 31 ways as a sum of consecutive naturals, for example, 996075 + ... + 996631.

It is an arithmetic number, because the mean of its divisors is an integer number (19887120).

Almost surely, 2^554968621 is an apocalyptic number.

It is an amenable number.

554968621 is a deficient number, since it is larger than the sum of its proper divisors (81419219).

554968621 is a wasteful number, since it uses less digits than its factorization.

554968621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693.

The product of its digits is 518400, while the sum is 46.

The square root of 554968621 is about 23557.7719871808. The cubic root of 554968621 is about 821.7810884152.

The spelling of 554968621 in words is "five hundred fifty-four million, nine hundred sixty-eight thousand, six hundred twenty-one".