550231613 has 4 divisors (see below), whose sum is σ = 553082748. Its totient is φ = 547380480.

The previous prime is 550231609. The next prime is 550231631. The reversal of 550231613 is 316132055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 232928644 + 317302969 = 15262^2 + 17813^2 .

It is a cyclic number.

It is not a de Polignac number, because 550231613 - 2² = 550231609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550231813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1425278 + ... + 1425663.

It is an arithmetic number, because the mean of its divisors is an integer number (138270687).

Almost surely, 2^550231613 is an apocalyptic number.

It is an amenable number.

550231613 is a deficient number, since it is larger than the sum of its proper divisors (2851135).

550231613 is a wasteful number, since it uses less digits than its factorization.

550231613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851134.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 550231613 is about 23457.0162851118. The cubic root of 550231613 is about 819.4362638285.

Adding to 550231613 its reverse (316132055), we get a palindrome (866363668).

The spelling of 550231613 in words is "five hundred fifty million, two hundred thirty-one thousand, six hundred thirteen".