275055560 has 128 divisors (see below), whose sum is σ = 698664960. Its totient is φ = 96768000.

The previous prime is 275055503. The next prime is 275055577. The reversal of 275055560 is 65550572.

It is a super-2 number, since 2×275055560² = 151311122173827200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 275055560.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1821485 + ... + 1821635.

It is an arithmetic number, because the mean of its divisors is an integer number (5458320).

Almost surely, 2^275055560 is an apocalyptic number.

275055560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275055560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349332480).

275055560 is an abundant number, since it is smaller than the sum of its proper divisors (423609400).

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

275055560 is a wasteful number, since it uses less digits than its factorization.

275055560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 35.

The square root of 275055560 is about 16584.7990642033. The cubic root of 275055560 is about 650.3395149377.

The spelling of 275055560 in words is "two hundred seventy-five million, fifty-five thousand, five hundred sixty".