554447021 has 4 divisors (see below), whose sum is σ = 557074944. Its totient is φ = 551819100.

The previous prime is 554447011. The next prime is 554447041. The reversal of 554447021 is 120744455.

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 a cyclic number.

It is not a de Polignac number, because 554447021 - 2¹⁸ = 554184877 is a prime.

It is a super-2 number, since 2×554447021² = 614822998191548882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554447011) 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, 1313645 + ... + 1314066.

It is an arithmetic number, because the mean of its divisors is an integer number (139268736).

Almost surely, 2^554447021 is an apocalyptic number.

It is an amenable number.

554447021 is a deficient number, since it is larger than the sum of its proper divisors (2627923).

554447021 is a wasteful number, since it uses less digits than its factorization.

554447021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627922.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 554447021 is about 23546.6987282719. The cubic root of 554447021 is about 821.5235511064.

The spelling of 554447021 in words is "five hundred fifty-four million, four hundred forty-seven thousand, twenty-one".