554305661 has 8 divisors (see below), whose sum is σ = 682222464. Its totient is φ = 438571440.

The previous prime is 554305643. The next prime is 554305669. The reversal of 554305661 is 166503455.

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

It is a cyclic number.

It is not a de Polignac number, because 554305661 - 2¹⁸ = 554043517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554305669) 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, 3045545 + ... + 3045726.

It is an arithmetic number, because the mean of its divisors is an integer number (85277808).

Almost surely, 2^554305661 is an apocalyptic number.

It is an amenable number.

554305661 is a deficient number, since it is larger than the sum of its proper divisors (127916803).

554305661 is a wasteful number, since it uses less digits than its factorization.

554305661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6091291.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 554305661 is about 23543.6968422548. The cubic root of 554305661 is about 821.4537275191.

The spelling of 554305661 in words is "five hundred fifty-four million, three hundred five thousand, six hundred sixty-one".