55067728 has 20 divisors (see below), whose sum is σ = 107002080. Its totient is φ = 27454304.

The previous prime is 55067717. The next prime is 55067731. The reversal of 55067728 is 82776055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 951 + ... + 10537.

It is an arithmetic number, because the mean of its divisors is an integer number (5350104).

Almost surely, 2^55067728 is an apocalyptic number.

It is an amenable number.

55067728 is a deficient number, since it is larger than the sum of its proper divisors (51934352).

55067728 is a wasteful number, since it uses less digits than its factorization.

55067728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9954 (or 9948 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 55067728 is about 7420.7633030572. The cubic root of 55067728 is about 380.4512828716.

The spelling of 55067728 in words is "fifty-five million, sixty-seven thousand, seven hundred twenty-eight".