55160028 has 216 divisors, whose sum is σ = 184352896. Its totient is φ = 14113440.

The previous prime is 55160009. The next prime is 55160029. The reversal of 55160028 is 82006155.

55160028 is a `hidden beast` number, since 5 + 51 + 600 + 2 + 8 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 55159983 and 55160010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55160029) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 823251 + ... + 823317.

Almost surely, 2^55160028 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 55160028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92176448).

55160028 is an abundant number, since it is smaller than the sum of its proper divisors (129192868).

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

55160028 is a wasteful number, since it uses less digits than its factorization.

55160028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 55160028 is about 7426.9797360704. The cubic root of 55160028 is about 380.6637246145.

The spelling of 55160028 in words is "fifty-five million, one hundred sixty thousand, twenty-eight".