55743828 has 48 divisors (see below), whose sum is σ = 153452544. Its totient is φ = 15412320.

The previous prime is 55743827. The next prime is 55743839. The reversal of 55743828 is 82834755.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 55743828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55743823) 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, 8100 + ... + 13307.

It is an arithmetic number, because the mean of its divisors is an integer number (3196928).

Almost surely, 2^55743828 is an apocalyptic number.

It is an amenable number.

55743828 is an abundant number, since it is smaller than the sum of its proper divisors (97708716).

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

55743828 is a wasteful number, since it uses less digits than its factorization.

55743828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21452 (or 21450 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 55743828 is about 7466.1789424042. The cubic root of 55743828 is about 382.0019644828.

The spelling of 55743828 in words is "fifty-five million, seven hundred forty-three thousand, eight hundred twenty-eight".