554200421 has 2 divisors, whose sum is σ = 554200422. Its totient is φ = 554200420.

The previous prime is 554200399. The next prime is 554200429. The reversal of 554200421 is 124002455.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 551592196 + 2608225 = 23486^2 + 1615^2 .

It is a cyclic number.

It is not a de Polignac number, because 554200421 - 2¹⁰ = 554199397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (554200429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277100210 + 277100211.

It is an arithmetic number, because the mean of its divisors is an integer number (277100211).

Almost surely, 2^554200421 is an apocalyptic number.

It is an amenable number.

554200421 is a deficient number, since it is larger than the sum of its proper divisors (1).

554200421 is an equidigital number, since it uses as much as digits as its factorization.

554200421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 554200421 is about 23541.4617430609. The cubic root of 554200421 is about 821.4017373940.

Adding to 554200421 its reverse (124002455), we get a palindrome (678202876).

The spelling of 554200421 in words is "five hundred fifty-four million, two hundred thousand, four hundred twenty-one".