54691328 has 40 divisors (see below), whose sum is σ = 112268112. Its totient is φ = 26597376.

The previous prime is 54691327. The next prime is 54691333. The reversal of 54691328 is 82319645.

It is a happy number.

It is a super-2 number, since 2×54691328² = 5982282716807168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54691291 and 54691300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54691327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17501 + ... + 20387.

Almost surely, 2^54691328 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 54691328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56134056).

54691328 is an abundant number, since it is smaller than the sum of its proper divisors (57576784).

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

54691328 is an equidigital number, since it uses as much as digits as its factorization.

54691328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942 (or 2926 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 54691328 is about 7395.3585443844. The cubic root of 54691328 is about 379.5824777065.

The spelling of 54691328 in words is "fifty-four million, six hundred ninety-one thousand, three hundred twenty-eight".