55160280 has 288 divisors, whose sum is σ = 216075600. Its totient is φ = 12160512.

The previous prime is 55160269. The next prime is 55160297. The reversal of 55160280 is 8206155.

55160280 is a `hidden beast` number, since 5 + 51 + 602 + 8 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 934891 + ... + 934949.

Almost surely, 2^55160280 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 55160280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108037800).

55160280 is an abundant number, since it is smaller than the sum of its proper divisors (160915320).

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

55160280 is a wasteful number, since it uses less digits than its factorization.

55160280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 129 counting only the distinct ones).

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

The square root of 55160280 is about 7426.9967012245. The cubic root of 55160280 is about 380.6643043043.

The spelling of 55160280 in words is "fifty-five million, one hundred sixty thousand, two hundred eighty".