53217330 has 16 divisors (see below), whose sum is σ = 127721664. Its totient is φ = 14191280.

The previous prime is 53217313. The next prime is 53217337. The reversal of 53217330 is 3371235.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53217330.

It is not an unprimeable number, because it can be changed into a prime (53217337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 886926 + ... + 886985.

It is an arithmetic number, because the mean of its divisors is an integer number (7982604).

Almost surely, 2^53217330 is an apocalyptic number.

53217330 is an abundant number, since it is smaller than the sum of its proper divisors (74504334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53217330 is a wasteful number, since it uses less digits than its factorization.

53217330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773921.

The product of its (nonzero) digits is 1890, while the sum is 24.

The square root of 53217330 is about 7295.0209046993. The cubic root of 53217330 is about 376.1413051584.

Adding to 53217330 its reverse (3371235), we get a palindrome (56588565).

The spelling of 53217330 in words is "fifty-three million, two hundred seventeen thousand, three hundred thirty".