552389561 has 2 divisors, whose sum is σ = 552389562. Its totient is φ = 552389560.

The previous prime is 552389521. The next prime is 552389569. The reversal of 552389561 is 165983255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467381161 + 85008400 = 21619^2 + 9220^2 .

It is a cyclic number.

It is not a de Polignac number, because 552389561 - 2¹⁰ = 552388537 is a prime.

It is not a weakly prime, because it can be changed into another prime (552389569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276194780 + 276194781.

It is an arithmetic number, because the mean of its divisors is an integer number (276194781).

Almost surely, 2^552389561 is an apocalyptic number.

It is an amenable number.

552389561 is a deficient number, since it is larger than the sum of its proper divisors (1).

552389561 is an equidigital number, since it uses as much as digits as its factorization.

552389561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 44.

The square root of 552389561 is about 23502.9691954017. The cubic root of 552389561 is about 820.5061128004.

The spelling of 552389561 in words is "five hundred fifty-two million, three hundred eighty-nine thousand, five hundred sixty-one".