554454661 has 2 divisors, whose sum is σ = 554454662. Its totient is φ = 554454660.

The previous prime is 554454647. The next prime is 554454671. The reversal of 554454661 is 166454455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426629025 + 127825636 = 20655^2 + 11306^2 .

It is a cyclic number.

It is not a de Polignac number, because 554454661 - 2⁷ = 554454533 is a prime.

It is a super-3 number, since 3×554454661³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (554454671) 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 as a sum of consecutive naturals, namely, 277227330 + 277227331.

It is an arithmetic number, because the mean of its divisors is an integer number (277227331).

Almost surely, 2^554454661 is an apocalyptic number.

It is an amenable number.

554454661 is a deficient number, since it is larger than the sum of its proper divisors (1).

554454661 is an equidigital number, since it uses as much as digits as its factorization.

554454661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288000, while the sum is 40.

The square root of 554454661 is about 23546.8609585227. The cubic root of 554454661 is about 821.5273244824.

It can be divided in two parts, 55445 and 4661, that added together give a palindrome (60106).

The spelling of 554454661 in words is "five hundred fifty-four million, four hundred fifty-four thousand, six hundred sixty-one".