53217132 has 24 divisors (see below), whose sum is σ = 126210672. Its totient is φ = 17448000.

The previous prime is 53217121. The next prime is 53217133. The reversal of 53217132 is 23171235.

It is not an unprimeable number, because it can be changed into a prime (53217133) 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, 35619 + ... + 37082.

It is an arithmetic number, because the mean of its divisors is an integer number (5258778).

Almost surely, 2^53217132 is an apocalyptic number.

It is an amenable number.

53217132 is an abundant number, since it is smaller than the sum of its proper divisors (72993540).

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

53217132 is a wasteful number, since it uses less digits than its factorization.

53217132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72769 (or 72767 counting only the distinct ones).

The product of its digits is 1260, while the sum is 24.

The square root of 53217132 is about 7295.0073337866. The cubic root of 53217132 is about 376.1408386683.

Adding to 53217132 its reverse (23171235), we get a palindrome (76388367).

The spelling of 53217132 in words is "fifty-three million, two hundred seventeen thousand, one hundred thirty-two".