554621643 has 12 divisors (see below), whose sum is σ = 807237288. Its totient is φ = 366924480.

The previous prime is 554621623. The next prime is 554621689. The reversal of 554621643 is 346126455.

554621643 is a `hidden beast` number, since 5 + 5 + 4 + 6 + 2 + 1 + 643 = 666.

554621643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 554621643 - 2⁹ = 554621131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 554621598 and 554621607.

It is not an unprimeable number, because it can be changed into a prime (554621623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234030 + ... + 236387.

It is an arithmetic number, because the mean of its divisors is an integer number (67269774).

Almost surely, 2^554621643 is an apocalyptic number.

554621643 is a deficient number, since it is larger than the sum of its proper divisors (252615645).

554621643 is a wasteful number, since it uses less digits than its factorization.

554621643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470554 (or 470551 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 554621643 is about 23550.4064296139. The cubic root of 554621643 is about 821.6097877965.

The spelling of 554621643 in words is "five hundred fifty-four million, six hundred twenty-one thousand, six hundred forty-three".