54171728 has 20 divisors (see below), whose sum is σ = 113031828. Its totient is φ = 25002240.

The previous prime is 54171727. The next prime is 54171731. The reversal of 54171728 is 82717145.

It can be written as a sum of positive squares in 2 ways, for example, as 14077504 + 40094224 = 3752^2 + 6332^2 .

It is a super-2 number, since 2×54171728² = 5869152229011968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54171727) 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, 130013 + ... + 130428.

Almost surely, 2^54171728 is an apocalyptic number.

It is an amenable number.

54171728 is an abundant number, since it is smaller than the sum of its proper divisors (58860100).

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

54171728 is a wasteful number, since it uses less digits than its factorization.

54171728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260462 (or 260456 counting only the distinct ones).

The product of its digits is 15680, while the sum is 35.

The square root of 54171728 is about 7360.1445637976. The cubic root of 54171728 is about 378.3765645429.

The spelling of 54171728 in words is "fifty-four million, one hundred seventy-one thousand, seven hundred twenty-eight".