550217513 has 4 divisors (see below), whose sum is σ = 550302720. Its totient is φ = 550132308.

The previous prime is 550217483. The next prime is 550217519. The reversal of 550217513 is 315712055.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315712055 = 5 ⋅63142411.

It is a cyclic number.

It is not a de Polignac number, because 550217513 - 2²² = 546023209 is a prime.

It is a super-2 number, since 2×550217513² = 605478623223810338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550217519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32045 + ... + 46122.

It is an arithmetic number, because the mean of its divisors is an integer number (137575680).

Almost surely, 2^550217513 is an apocalyptic number.

It is an amenable number.

550217513 is a deficient number, since it is larger than the sum of its proper divisors (85207).

550217513 is an equidigital number, since it uses as much as digits as its factorization.

550217513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85206.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 550217513 is about 23456.7157334525. The cubic root of 550217513 is about 819.4292642610.

Adding to 550217513 its reverse (315712055), we get a palindrome (865929568).

The spelling of 550217513 in words is "five hundred fifty million, two hundred seventeen thousand, five hundred thirteen".