554500421 has 2 divisors, whose sum is σ = 554500422. Its totient is φ = 554500420.

The previous prime is 554500381. The next prime is 554500433. The reversal of 554500421 is 124005455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 456292321 + 98208100 = 21361^2 + 9910^2 .

It is a cyclic number.

It is not a de Polignac number, because 554500421 - 2¹⁸ = 554238277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (554500451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277250210 + 277250211.

It is an arithmetic number, because the mean of its divisors is an integer number (277250211).

Almost surely, 2^554500421 is an apocalyptic number.

It is an amenable number.

554500421 is a deficient number, since it is larger than the sum of its proper divisors (1).

554500421 is an equidigital number, since it uses as much as digits as its factorization.

554500421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 554500421 is about 23547.8326178865. The cubic root of 554500421 is about 821.5499245005.

Adding to 554500421 its reverse (124005455), we get a palindrome (678505876).

The spelling of 554500421 in words is "five hundred fifty-four million, five hundred thousand, four hundred twenty-one".