552289921 has 2 divisors, whose sum is σ = 552289922. Its totient is φ = 552289920.

The previous prime is 552289909. The next prime is 552289937. The reversal of 552289921 is 129982255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545736321 + 6553600 = 23361^2 + 2560^2 .

It is a cyclic number.

It is not a de Polignac number, because 552289921 - 2¹¹ = 552287873 is a prime.

It is equal to p_28959370 and since 552289921 and 28959370 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 (552289981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276144960 + 276144961.

It is an arithmetic number, because the mean of its divisors is an integer number (276144961).

Almost surely, 2^552289921 is an apocalyptic number.

It is an amenable number.

552289921 is a deficient number, since it is larger than the sum of its proper divisors (1).

552289921 is an equidigital number, since it uses as much as digits as its factorization.

552289921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 43.

The square root of 552289921 is about 23500.8493676292. The cubic root of 552289921 is about 820.4567755506.

The spelling of 552289921 in words is "five hundred fifty-two million, two hundred eighty-nine thousand, nine hundred twenty-one".