552313981 has 2 divisors, whose sum is σ = 552313982. Its totient is φ = 552313980.

The previous prime is 552313963. The next prime is 552314017. The reversal of 552313981 is 189313255.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 428904100 + 123409881 = 20710^2 + 11109^2 .

It is a cyclic number.

It is not a de Polignac number, because 552313981 - 2¹¹ = 552311933 is a prime.

It is a super-2 number, since 2×552313981² = 610101467216136722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 552313981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (552319981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276156990 + 276156991.

It is an arithmetic number, because the mean of its divisors is an integer number (276156991).

Almost surely, 2^552313981 is an apocalyptic number.

It is an amenable number.

552313981 is a deficient number, since it is larger than the sum of its proper divisors (1).

552313981 is an equidigital number, since it uses as much as digits as its factorization.

552313981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 37.

The square root of 552313981 is about 23501.3612584463. The cubic root of 552313981 is about 820.4686895247.

The spelling of 552313981 in words is "five hundred fifty-two million, three hundred thirteen thousand, nine hundred eighty-one".