53217233 has 16 divisors (see below), whose sum is σ = 58968000. Its totient is φ = 47823552.

The previous prime is 53217223. The next prime is 53217251. The reversal of 53217233 is 33271235.

It is not a de Polignac number, because 53217233 - 2²⁰ = 52168657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53217223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31691 + ... + 33327.

It is an arithmetic number, because the mean of its divisors is an integer number (3685500).

Almost surely, 2^53217233 is an apocalyptic number.

It is an amenable number.

53217233 is a deficient number, since it is larger than the sum of its proper divisors (5750767).

53217233 is a wasteful number, since it uses less digits than its factorization.

53217233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744.

The product of its digits is 3780, while the sum is 26.

The square root of 53217233 is about 7295.0142563260. The cubic root of 53217233 is about 376.1410766256.

Adding to 53217233 its reverse (33271235), we get a palindrome (86488468).

The spelling of 53217233 in words is "fifty-three million, two hundred seventeen thousand, two hundred thirty-three".