223165513 has 4 divisors (see below), whose sum is σ = 225251280. Its totient is φ = 221079748.

The previous prime is 223165499. The next prime is 223165517. The reversal of 223165513 is 315561322.

223165513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223165513 is a prime.

It is a super-3 number, since 3×223165513³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223165517) 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, 1042723 + ... + 1042936.

It is an arithmetic number, because the mean of its divisors is an integer number (56312820).

Almost surely, 2^223165513 is an apocalyptic number.

It is an amenable number.

223165513 is a deficient number, since it is larger than the sum of its proper divisors (2085767).

223165513 is a wasteful number, since it uses less digits than its factorization.

223165513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085766.

The product of its digits is 5400, while the sum is 28.

The square root of 223165513 is about 14938.7252802908. The cubic root of 223165513 is about 606.5626910257.

The spelling of 223165513 in words is "two hundred twenty-three million, one hundred sixty-five thousand, five hundred thirteen".