553281613 has 2 divisors, whose sum is σ = 553281614. Its totient is φ = 553281612.

The previous prime is 553281607. The next prime is 553281647. The reversal of 553281613 is 316182355.

It is an a-pointer prime, because the next prime (553281647) can be obtained adding 553281613 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 553049289 + 232324 = 23517^2 + 482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-553281613 is a prime.

It is a super-2 number, since 2×553281613² = 612241086567763538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553287613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276640806 + 276640807.

It is an arithmetic number, because the mean of its divisors is an integer number (276640807).

Almost surely, 2^553281613 is an apocalyptic number.

It is an amenable number.

553281613 is a deficient number, since it is larger than the sum of its proper divisors (1).

553281613 is an equidigital number, since it uses as much as digits as its factorization.

553281613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 34.

The square root of 553281613 is about 23521.9389719470. The cubic root of 553281613 is about 820.9475527577.

The spelling of 553281613 in words is "five hundred fifty-three million, two hundred eighty-one thousand, six hundred thirteen".