208225553 has 2 divisors, whose sum is σ = 208225554. Its totient is φ = 208225552.

The previous prime is 208225519. The next prime is 208225559. The reversal of 208225553 is 355522802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137194369 + 71031184 = 11713^2 + 8428^2 .

It is a cyclic number.

It is not a de Polignac number, because 208225553 - 2²⁴ = 191448337 is a prime.

It is equal to p_11508971 and since 208225553 and 11508971 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (208225559) 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, 104112776 + 104112777.

It is an arithmetic number, because the mean of its divisors is an integer number (104112777).

Almost surely, 2^208225553 is an apocalyptic number.

It is an amenable number.

208225553 is a deficient number, since it is larger than the sum of its proper divisors (1).

208225553 is an equidigital number, since it uses as much as digits as its factorization.

208225553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 208225553 is about 14430.0226264549. The cubic root of 208225553 is about 592.7133029416.

The spelling of 208225553 in words is "two hundred eight million, two hundred twenty-five thousand, five hundred fifty-three".