55693824 has 80 divisors (see below), whose sum is σ = 150258240. Its totient is φ = 18329600.

The previous prime is 55693789. The next prime is 55693829. The reversal of 55693824 is 42839655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55693829) 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, 154957 + ... + 155315.

It is an arithmetic number, because the mean of its divisors is an integer number (1878228).

Almost surely, 2^55693824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55693824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75129120).

55693824 is an abundant number, since it is smaller than the sum of its proper divisors (94564416).

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

55693824 is a wasteful number, since it uses less digits than its factorization.

55693824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 465 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 55693824 is about 7462.8294902135. The cubic root of 55693824 is about 381.8877076443.

The spelling of 55693824 in words is "fifty-five million, six hundred ninety-three thousand, eight hundred twenty-four".