550611613 has 2 divisors, whose sum is σ = 550611614. Its totient is φ = 550611612.

The previous prime is 550611601. The next prime is 550611641. The reversal of 550611613 is 316116055.

It is an a-pointer prime, because the next prime (550611641) can be obtained adding 550611613 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 346778884 + 203832729 = 18622^2 + 14277^2 .

It is a cyclic number.

It is not a de Polignac number, because 550611613 - 2⁹ = 550611101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550611643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275305806 + 275305807.

It is an arithmetic number, because the mean of its divisors is an integer number (275305807).

Almost surely, 2^550611613 is an apocalyptic number.

It is an amenable number.

550611613 is a deficient number, since it is larger than the sum of its proper divisors (1).

550611613 is an equidigital number, since it uses as much as digits as its factorization.

550611613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 550611613 is about 23465.1148090096. The cubic root of 550611613 is about 819.6248596353.

Adding to 550611613 its reverse (316116055), we get a palindrome (866727668).

The spelling of 550611613 in words is "five hundred fifty million, six hundred eleven thousand, six hundred thirteen".