554952221 has 2 divisors, whose sum is σ = 554952222. Its totient is φ = 554952220.

The previous prime is 554952163. The next prime is 554952227. The reversal of 554952221 is 122259455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 537729721 + 17222500 = 23189^2 + 4150^2 .

It is a cyclic number.

It is not a de Polignac number, because 554952221 - 2¹⁸ = 554690077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (554952227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277476110 + 277476111.

It is an arithmetic number, because the mean of its divisors is an integer number (277476111).

Almost surely, 2^554952221 is an apocalyptic number.

It is an amenable number.

554952221 is a deficient number, since it is larger than the sum of its proper divisors (1).

554952221 is an equidigital number, since it uses as much as digits as its factorization.

554952221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 35.

The square root of 554952221 is about 23557.4239041539. The cubic root of 554952221 is about 821.7729934574.

The spelling of 554952221 in words is "five hundred fifty-four million, nine hundred fifty-two thousand, two hundred twenty-one".