53217642 has 8 divisors (see below), whose sum is σ = 106435296. Its totient is φ = 17739212.

The previous prime is 53217641. The next prime is 53217719. The reversal of 53217642 is 24671235.

It is a sphenic number, since it is the product of 3 distinct primes.

53217642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (53217641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4434798 + ... + 4434809.

It is an arithmetic number, because the mean of its divisors is an integer number (13304412).

Almost surely, 2^53217642 is an apocalyptic number.

53217642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

53217642 is a wasteful number, since it uses less digits than its factorization.

53217642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8869612.

The product of its digits is 10080, while the sum is 30.

The square root of 53217642 is about 7295.0422891166. The cubic root of 53217642 is about 376.1420402314.

Adding to 53217642 its reverse (24671235), we get a palindrome (77888877).

The spelling of 53217642 in words is "fifty-three million, two hundred seventeen thousand, six hundred forty-two".