554164421 has 2 divisors, whose sum is σ = 554164422. Its totient is φ = 554164420.

The previous prime is 554164417. The next prime is 554164423. The reversal of 554164421 is 124461455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 374229025 + 179935396 = 19345^2 + 13414^2 .

It is a cyclic number.

It is not a de Polignac number, because 554164421 - 2² = 554164417 is a prime.

Together with 554164423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (554164423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277082210 + 277082211.

It is an arithmetic number, because the mean of its divisors is an integer number (277082211).

Almost surely, 2^554164421 is an apocalyptic number.

It is an amenable number.

554164421 is a deficient number, since it is larger than the sum of its proper divisors (1).

554164421 is an equidigital number, since it uses as much as digits as its factorization.

554164421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19200, while the sum is 32.

The square root of 554164421 is about 23540.6971222179. The cubic root of 554164421 is about 821.3839513478.

The spelling of 554164421 in words is "five hundred fifty-four million, one hundred sixty-four thousand, four hundred twenty-one".