552319981 has 2 divisors, whose sum is σ = 552319982. Its totient is φ = 552319980.

The previous prime is 552319967. The next prime is 552319991. The reversal of 552319981 is 189913255.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411684100 + 140635881 = 20290^2 + 11859^2 .

It is a cyclic number.

It is not a de Polignac number, because 552319981 - 2⁷ = 552319853 is a prime.

It is a super-2 number, since 2×552319981² = 610114722823680722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (552319921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276159990 + 276159991.

It is an arithmetic number, because the mean of its divisors is an integer number (276159991).

Almost surely, 2^552319981 is an apocalyptic number.

It is an amenable number.

552319981 is a deficient number, since it is larger than the sum of its proper divisors (1).

552319981 is an equidigital number, since it uses as much as digits as its factorization.

552319981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 43.

The square root of 552319981 is about 23501.4889102797. The cubic root of 552319981 is about 820.4716605366.

The spelling of 552319981 in words is "five hundred fifty-two million, three hundred nineteen thousand, nine hundred eighty-one".